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Archimid

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Re: Batteries: Today's Energy Solution
« Reply #1050 on: November 22, 2018, 02:12:54 AM »
I agree. It is not as simple as "gravity", but the host of problems that must be solved before we can even change the trajectory of asteroids made the answer of "gravity" good enough. At least back then. Now with reusable rockets a reality and access to space becoming cheaper before the turn of  the decade it may be worth giving it a few whirls. 

The right approach seems to be securing propellant. They are looking for water in asteroids to convert to fuel, but if they can land on an asteroid even throwing asteroid pieces on the opposite direction they want to travel at high enough speeds might do the trick.

If they can change the orbit of the asteroid towards earth, then slowing down, fitting the asteroid with thermal protection and find it a suitable spot to crash into might be doable. The trick is not to carry the propellant from Earth, but to somehow get from space.

And remember, asteroid crashes are 100% natural.
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Archimid

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Re: Batteries: Today's Energy Solution
« Reply #1051 on: November 22, 2018, 02:14:54 AM »
Ken Feldman, I think you have the most likely solution to the problem. Between more efficient resource extraction, recycling and chemistry changes battery resources should not become a huge problem for decades.
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Tor Bejnar

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Re: Batteries: Today's Energy Solution
« Reply #1052 on: November 22, 2018, 02:20:50 AM »
Thanks, you all, for this discussion on material costs in a greatly expanding market.  (Not that I'm attempting to end it.)
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Sigmetnow

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Re: Batteries: Today's Energy Solution
« Reply #1053 on: November 22, 2018, 04:58:22 PM »
Australia:  Labor will subsidise 100,000 household batteries, and aim to help one million more households have battery systems by 2025 if it wins the next federal election.

Labor's $15 billion energy investment
Quote
"The beauty of the batteries is that the energy is going to be there when you need it not just when the sun is shining," Mr Shorten told the Nine Network.
...
The Smart Energy Council estimates new household battery systems could help homes save more than 60 per cent on their power bills.

They would also reduce peak demand in the electricity grid and improve the grid's reliability.
https://www.news.com.au/national/breaking-news/labor-ready-to-unveil-energy-policy/news-story/7d3fb8916b7b9e2f427f0e6ac3c3c23c
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gerontocrat

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Re: Batteries: Today's Energy Solution
« Reply #1054 on: November 30, 2018, 09:03:52 PM »
Surprised TESLA not blowing the trumpet on this... big batteries rule, OK.

And meanwhile the lunatic Aussie right-wing Federal Government is still mounting a rearguard action against all things renewable despite being hammered in recent state government  elections and a total humiliation in the by-election in the constituency of their recently defenestrated Prime Minister. Sort of the US in miniature.

https://reneweconomy.com.au/tesla-big-battery-turns-one-celebrates-50-million-in-grid-savings-95920/
Tesla big battery turns one, celebrates $50 million in grid savings
Quote
The Tesla big battery in South Australia on Friday celebrates its first anniversary since swinging into action on November 30 last year – a day before its official opening.

In that period, the 100MW/129MWh Tesla big battery – officially known as the Hornsdale Power Reserve – has defied the critics and naysayers and proved that it can make money, lower prices and boost grid security. More than that, it has become a major signpost to the future of faster, cheaper, smarter and cleaner grid.

What is already known is most of those savings have been achieved by smashing the cartel of gas generators that was controlling prices in the FCAS market.

The battery’s presence means that a network constraint imposed in South Australia that was repeatedly rorted by those generators is no longer needed.or imposed.

More importantly, the success of the battery has paved the way for other installations. Another two batteries in Victoria – at the Gannawarra solar farm (Tesla) and the Ballarat network hub (Fluence) have nearly completed commissioning, and a third is soon to join at the Wattle Point wind farm in South Australia.

Then a  third wave will emerge at the Kennedy (Tesla), Lake Bonney (Tesla), Lincoln Gap (Fluence), Bulgana (Tesla) and Snowtown wind and solar projects. UK billionaire Sanjeev Gupta has big plans for an even bigger battery near Whyalla, and batteries at Newman and Alice Springs have proved their worth in supporting diesel and gas generators and slashing fuel costs.
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gerontocrat

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Re: Batteries: Today's Energy Solution
« Reply #1055 on: December 04, 2018, 07:09:04 PM »
Meanwhile, in France (and its oversea territories), real movement on big battery /grid stabilisation systems plus solar/wind power.

It looks like President Macron's government is doing one thing right, at least.

https://www.energy-storage.news/news/neoens-6mwh-france-battery-system-is-preparation-for-new-breed-of-storage-a

Quote
Neoen’s 6MWh France battery system is preparation for ‘new breed’ of storage arriving in Europe
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Sigmetnow

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Re: Batteries: Today's Energy Solution
« Reply #1056 on: December 04, 2018, 08:30:41 PM »
Australia

Tesla's giant 'Virtual Power Plant' made of 50k homes and Powerwalls enters 2nd phase
Quote
Tesla’s ambitious plan to establish a 250 MW/650 MWh “Virtual Power Plant” in South Australia is moving to its second phase. In an announcement last week, Minister for Energy and Mining Dan van Holst Pellekaan stated that initiatives are now underway to install Powerwall 2 home battery units and solar panels to another 1,000 Housing SA properties.

The proposed Virtual Power Plant was conceived by Tesla and South Australia’s former Labor government earlier this year. The project is undoubtedly ambitious, involving 50,000 connected homes, each fitted with a 13.5 kWh Tesla Powerwall 2 battery and a 5 kW rooftop solar system. The 50,000 houses are expected to deliver 250 MW of solar energy and 650 MWh of battery storage capacity. Just like Tesla’s Powerpack farm in South Australia, the VPP will be capable of providing additional grid stability by shifting demand away from a stressed grid during peak hours.

The first phase of the project, which involved the installation of batteries and solar panels to the first 100 houses of the VPP, has been successful so far. Households that are part of the existing system have reported a 70% reduction in their grid consumption, leading to lower power bills. With the first trial phase done, Tesla and solar retail partner Energy Locals are now looking to add 1,000 more households to the system.
...
If the second phase of the Virtual Power Plant proves successful, the third, most ambitious phase of the project will commence. Provided that funding for the estimated AU$800 million ($628 million) project is secured, the system would grow to 50,000 homes over the next few years. When complete, the 50,000-strong Virtual Power Plant is expected to deliver 250 MW of solar energy and 650 MWh of battery storage capacity, dwarfing the highly successful Hornsdale Power Reserve near Jamestown, which has a 100MW/129MWh capacity.

Watch Tesla’s teaser for the South Australia Virtual Power Plant in the video [at the link].
https://www.teslarati.com/tesla-virtual-power-plant-south-australia-second-phase/
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Archimid

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Re: Batteries: Today's Energy Solution
« Reply #1057 on: December 10, 2018, 02:48:30 AM »
Fluoride discovery could lead to much longer-lasting EV batteries

http://hondanews.com/releases/honda-research-institute-and-university-researchers-develop-breakthrough-battery-chemistry

Quote
Fluoride-ion batteries offer a promising new battery chemistry with up to ten times more energy density than currently available Lithium batteries," said Dr. Christopher Brooks, Chief Scientist, Honda Research Institute, and a co-author of the paper. "Unlike Li-ion batteries, FIBs do not pose a safety risk due to overheating, and obtaining the source materials for FIBs creates considerably less environmental impact than the extraction process for lithium and cobalt."

...

Currently, solid-state fluoride ion-conducting battery iterations need to operate at elevated temperatures–above 150 degrees Celsius–to make the electrolyte fluoride-conducting. According to the paper's authors, these limitations in the electrolyte have presented a significant challenge for achieving low-temperature operating FIBs.

To address this, the research team found a method for creating a fluoride-ion electrochemical cell capable of operating at room temperature–a breakthrough made possible by a chemically stable liquid fluoride-conducting electrolyte with high ionic conductivity and a wide operating voltage. The scientists developed the electrolyte using dry tetraalkylammonium fluoride salts dissolved in an organic, fluorinated ether solvent. When paired with a composite cathode featuring a core-shell nanostructure of copper, lanthanum and fluorine, the researchers demonstrated reversible electrochemical cycling at room temperature.

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Sigmetnow

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Re: Batteries: Today's Energy Solution
« Reply #1058 on: December 11, 2018, 07:21:55 PM »
By the Reno [Nevada] Gazette.

It's big, loud and secretive: We got a tour of Tesla's Gigafactory and here's how it works
https://www.rgj.com/story/news/2018/12/10/reno-sparks-nevada-tesla-gigafactory-factory-model-3-sedan-jobs/2211115002/
With photos and video.
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Sigmetnow

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Re: Batteries: Today's Energy Solution
« Reply #1059 on: December 15, 2018, 02:31:14 PM »
According to the document, a Tesla Megapack consists of long 23′-5″ (7.14m) x 5′-3″ (1.60m) battery system, which the company mostly installs back to back with another unit.

Tesla Megapack to debut at giant energy project in California
Quote
Tesla is listing the project as having a total capacity of 1,200 MWh, which would mean that each Megapack has a capacity of 2,673 kWh.

That’s more than 12 times the capacity of Powerpack 2 in a package that could potentially fit about 8 Powerpacks.

The total capacity of those 449 Megapacks represents more energy capacity than Tesla Energy deployed throughout its first 3 years of operation – all Powerpacks and Powerwalls combined. ...
https://electrek.co/2018/12/15/tesla-megapack-debut-giant-energy-storage/

Commissioned by PG&E at the Moss Landing substation.
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Archimid

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Re: Batteries: Today's Energy Solution
« Reply #1060 on: December 16, 2018, 02:13:09 PM »
Quote
The California Public Utilities Commission approved the project last month and along with 3 other energy storage system, the new energy storage capacity is so important that it will replace three gas power plants.

Three gas power plants. Frigging awesome.
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gerontocrat

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Re: Batteries: Today's Energy Solution
« Reply #1061 on: December 24, 2018, 05:14:35 PM »
The article suggests that for grid-scale stationary storage systems flow batteries may end up the preferred solution over lithium-ion due to longer power discharge times and reducing cost. In another article cell-cube claim that have a 10 year old unit with 11,000 cycles on the clock still at 99% capacity.

https://www.bloomberg.com/news/articles/2018-12-24/canada-battery-maker-says-flow-storage-costs-to-tumble-by-half  (in 4 years)

Canada Battery Maker Says Flow Storage Costs to Tumble by Half
Bloomberg News
24 December 2018, 03:11 GMT Updated on 24 December 2018, 16:00 GMT
Quote
CellCube Energy Storage Systems Inc., a Canada-listed maker of batteries that can last for as long as two decades, said the cost of its technology may halve within four years, potentially boosting its uptake over lithium-ion units.

Costs of its vanadium redox flow battery units, which can discharge power for four hours, will decline to $150 per kilowatt hour from $300, President Stefan Schauss said in a phone interview from Toronto this month. Batteries with eight hours of duration will slump to $100 from $200, he said.

Utilities and renewable energy suppliers are increasingly looking to store intermittent wind and sun-generated power to balance out power flows to grids and deploy the electricity when demand peaks. About $620 billion in investment will be required to meet the global energy storage needs that will surge to a cumulative 942 gigawatts by 2040, according to Bloomberg NEF.

“The stationary energy storage market is in an inflection point,” said Schauss, adding that users increasingly prefer storage with longer duration. Combined with falling costs of flow batteries, “lithium batteries may have a hard time to compete.”
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sidd

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Re: Batteries: Today's Energy Solution
« Reply #1062 on: December 28, 2018, 07:43:36 AM »
More on vanadium redox flow batteries:

https://spectrum.ieee.org/green-tech/fuel-cells/its-big-and-longlived-and-it-wont-catch-fire-the-vanadium-redoxflow-battery

https://www.engineering.com/DesignerEdge/DesignerEdgeArticles/ArticleID/12312/Massive-800-MegaWatt-hour-Battery-to-Be-Deployed-in-China.aspx

https://www.engineering.com/ElectronicsDesign/ElectronicsDesignArticles/ArticleID/8536/Turning-Toxic-Waste-into-Batteries.aspx

Second link claims 20MW 80 MWH in cargo container. Not too bad. hundred of these in a football stadium could power one of several millionstrong midwestern towns that i wander past. Probably best to colocate with large consumers to cut down prices for xmission and xformer yards.

now you still got HCL in volume and vanadium to deal with in case of a spill, but thats what spill control protocols are for. And it dont catch fire like sodium sulfur.

sidd

SteveMDFP

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Re: Batteries: Today's Energy Solution
« Reply #1063 on: December 28, 2018, 08:14:16 AM »
More on vanadium redox flow batteries:
 
now you still got HCL in volume and vanadium to deal with in case of a spill, but thats what spill control protocols are for. And it dont catch fire like sodium sulfur.

sidd

Thanks, sidd.  I think we'll hear more about vanadium flow batteries in the future.  It already has an important use in steel, so industrial uses are not a foreign concept.  Pricey stuff, but flow batteries keep re-using the same vanadium ions over and over.  Such stationary flow batteries may be a no-brainer addition to big solar photovoltaic systems in the near future.  And yes, as toxic spills are concerned, one could do far worse than vanadium, mostly toxic when inhaled.

We might avert catastrophes with such technology, if needed investments can be made fast enough.

sidd

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Re: Batteries: Today's Energy Solution
« Reply #1064 on: December 28, 2018, 09:04:44 AM »
Re: Such stationary flow batteries may be a no-brainer addition to big solar photovoltaic systems in the near future.

absolutely, colocate near intermittent generation which has transformer yard  and big transmission right there as well as my suggestion of colocating with large consumers. The latter can make some serious coin off peak shaving, and the former off peak production.

sidd
 

Archimid

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Re: Batteries: Today's Energy Solution
« Reply #1065 on: December 28, 2018, 02:47:45 PM »

Second link claims 20MW 80 MWH in cargo container. Not too bad. hundred of these in a football stadium could power one of several millionstrong midwestern towns that i wander past. Probably best to colocate with large consumers to cut down prices for xmission and xformer yards.

With such mobility and compactness eventually these batteries should be as close as possible to their load/charger to minimize transmission losses. Thanks for bringing up this technology.
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Jim Hunt

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Re: Batteries: Today's Energy Solution
« Reply #1066 on: December 29, 2018, 10:02:43 AM »
More on vanadium redox flow batteries

Further to our conversation over at aTTP's place:

Quote
There’s even one of those in North Cornwall. Note that redT insist on calling it a “containerised vanadium redox flow machine“!

http://www.V2G.co.uk/2017/11/redt-flow-machine-connects-to-centrica-local-energy-market/
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sidd

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Re: Batteries: Today's Energy Solution
« Reply #1067 on: January 16, 2019, 09:30:22 PM »
Peakers, storage and batteries: duration matters

"I can beat a gas peaker anywhere in the country today with a solar-plus-storage power plant,"

" Hohenstein advocated a "duration portfolio" approach that uses energy storage to shave peak load. "

"When solar penetration is lower than about 11%, the potential of four-hour storage is lower than it would be with zero solar deployment because solar penetration of 11% or less flattens the load curve. Above 11% penetration, however, NREL found that solar power creates a "peakier" load curve that increases the potential of four-hour storage."

"the cost of energy storage is highly dependent on the number of hours of duration needed."

https://www.utilitydive.com/news/unlayering-peak-demand-could-accelerate-energy-storage-adoption/546098/

sidd

Sigmetnow

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Re: Batteries: Today's Energy Solution
« Reply #1068 on: January 23, 2019, 06:47:04 PM »
India is getting its own giant battery gigafactory for electric vehicles
Quote
“Our plan is to be the largest Lithium-ion Battery manufacturer in India, and we aim to be the first mover in one of the world’s largest markets. The interest this project is generating especially in the Indian automobile sector is very exciting.”

They are talking about a factory with a capacity of up to 30 GWh per year, which is comparable to what Tesla and Panasonic are producing at Gigafactory 1 at the moment. ...
https://electrek.co/2019/01/21/india-battery-gigafactory-electric-vehicles/
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Archimid

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Re: Batteries: Today's Energy Solution
« Reply #1069 on: January 24, 2019, 02:12:12 AM »
Colorado's largest Tesla Powerpack




I thought this was a very insightful interview.
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oren

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Re: Batteries: Today's Energy Solution
« Reply #1070 on: January 24, 2019, 04:12:59 AM »
I thought this was a very insightful interview.
I agree, showcases the thought processes on the (rather conservative) utility side, and the benefits of a battery system.

Sigmetnow

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Re: Batteries: Today's Energy Solution
« Reply #1071 on: January 25, 2019, 05:04:00 PM »
Lithium from California’s Salton Sea brine?  Interesting, if true.

Tesla is in talks to buy lithium from Warren Buffett’s geothermal wells in California, report says
Quote
Warren Buffett’s Berkshire Hathaway Energy is looking to potentially extract large amounts of lithium from its Salton Sea geothermal plants and Tesla is reportedly in talks to be a customer.
https://electrek.co/2019/01/25/tesla-talks-lithium-warren-buffett-geothermal-wells-california-report/
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Sigmetnow

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Re: Batteries: Today's Energy Solution
« Reply #1072 on: January 30, 2019, 06:36:08 PM »
Even compared to the Tesla Model S and X, the Model 3 battery design is quite different.

Tesla Model 3 Battery Current Collector: Radically Different Design
https://insideevs.com/tesla-model-3-battery-current-collector-design/amp/
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Sigmetnow

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Re: Batteries: Today's Energy Solution
« Reply #1073 on: February 04, 2019, 09:18:32 PM »
Tesla acquires ultracapacitor and battery manufacturer Maxwell for over $200 million
Quote
But Tesla’s acquisition of Maxwell might have little to do with ultracapacitors.
The automaker might be more interested with Maxwell’s dry electrode technology that they have been hyping recently.
Maxwell claims that its electrode enables an energy density of over 300 Wh/kg in current demonstration cells and they see a path to over 500 Wh/kg.

This would represent a significant improvement over current battery cells used by Tesla and enable longer range or lighter weight, but that’s not even the most attractive benefit of Maxwell’s dry electrode.

They claim that it should simplify the manufacturing process and result in a “10 to 20% cost reduction versus state-of-the-art wet electrodes” while “extending battery Life up to a factor of 2.”
https://electrek.co/2019/02/04/tesla-acquires-ultracapacitor-battery-manufacturer/

A paper on Maxwell’s electrode:
Electrochemical Performance of Dry Battery Electrode
Quote
Maxwell Technologies unique heritage solvent-free dry electrode process4 used to commercialized Ultracapacitor electrodes can be adapted to existing lithium ion battery chemistries and advanced materials. Maxwell dry electrode manufacturing demonstrative benefits over conventional slurry wet coating process includes, (i)environmentally benign due to elimination of toxic solvent, (ii) lower cost by reducing capital and operating expenditures, resulting from elimination of solvent recovery and recycling system, (iii) improved energy and power density afforded by unique dense high loading electrode microstructures.
http://ma.ecsdl.org/content/MA2018-01/3/365.abstract

I’m reading suggestions that ultracapacitors could be used to improve regenerative braking, by temporarily storing power when the battery cannot take it (e.g., when the battery is already at 100% charge, or on a long downhill stretch early in a trip).  Or for bursts of power.  And that the dry battery electrode could be of benefit in next generation solid state batteries.
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sidd

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Re: Batteries: Today's Energy Solution
« Reply #1074 on: February 04, 2019, 10:15:29 PM »
Batteries are limited in charge rates, but that limit is considerably better for ultracapacitors. The downside is that ultracapacitors have small storage capacity caompared to batteries. So i see a role for them during hard braking, where the power generated by the EM brakes exceeds charge capacity of the battery. The ultracap sponges up the excess and dribbles it out at a rate the battery can absorb.

sidd

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Re: Batteries: Today's Energy Solution
« Reply #1075 on: February 05, 2019, 02:57:38 AM »
Reposting a repost of a post, my emphasis:

Quote
This morning, Tesla announced it was acquiring Maxwell, a super capacitor manufacturer for about $200M in an all stock deal. I've already seen some reporting of this getting it all wrong, so here's my take.

This isn't about the super capacitors. This isn't about acquiring talented research scientists. It is all about the battery cell manufacturing technology that Maxwell has successfully transferred from their super capacitor manufacturing. This manufacturing technology (note, no new battery cell chemistry breakthroughs are here at all) allows any lithium ion cell to significantly increase:
Energy density
Power output at high energy capacities
Longevity
And it can do all three of the above simultaneously while being significantly cheaper to manufacture. Here's the Maxwell paper that describes the results.

A lithium ion battery is simple in concept. You start with an aluminum sheet that acts as the cathode electrode. You create the cathode by mixing a bunch of elements together (nickle, magnesium, cobalt, etc.) along with a liquid solvent to form a slurry paste. You then compress this slurry onto the aluminum sheet through high pressure rollers. You then dry the new composite sheet in an oven and drive off the liquid solvent. You do this process again, this time with a copper sheet and your anode material (typically graphite with some silicon these days), and then you combine these two composite sheets together along with a polymer separator and you've got a battery cell (view this for a really quick overview).

The liquid solvent adds challenges in that it interacts with the cathode and anode chemistries in undesirable ways. And it is expensive since you have to heat the composite in giant ovens and recover the driven off solvent vapor (can't vent into the air!).

What Maxwell claims to have is a process to mix and bond the cathode and anode ingredients WITHOUT needing a wet solvent. They use some kind of proprietary polymer binder and a dry process. So the end result is a better performing cell, in every which way possible (energy density, power density and longevity), AND it reduces manufacturing cost since you don't need high energy drying ovens and solvent recapture systems.

So, what's this mean? I think this means Tesla got a bargain for $200M in stock. Gotta scoot, more later.

From: https://rivianauto.club/xf/threads/teslas-battery-cell-technology-acquisition-maxwell.54/


Higher power density AND lower manufacturing emissions if no ovens are needed.  Excellent.
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oren

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Re: Batteries: Today's Energy Solution
« Reply #1076 on: February 05, 2019, 03:02:25 AM »
Batteries are limited in charge rates, but that limit is considerably better for ultracapacitors. The downside is that ultracapacitors have small storage capacity caompared to batteries. So i see a role for them during hard braking, where the power generated by the EM brakes exceeds charge capacity of the battery. The ultracap sponges up the excess and dribbles it out at a rate the battery can absorb.

sidd
Indeed. And I think the same applies for hard acceleration. The ultracapacitor acts as a cache for the slower battery, protecting it from surges.

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Re: Batteries: Today's Energy Solution
« Reply #1077 on: February 05, 2019, 05:22:27 AM »
Re: the same applies for hard acceleration.

Perhaps for  short acceleration times, remember that braking times from 60 to zero are smaller than acceleration times from zero to 60 so power in from brakes is greater than power out during acceleration

The best braking times are 2.7-3 sec on performance cars with performance tires. Acceleration times from 0-60 in a performance car like a tesla is about twice that.

sidd
« Last Edit: February 05, 2019, 05:32:39 AM by sidd »

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Re: Batteries: Today's Energy Solution
« Reply #1078 on: February 05, 2019, 07:46:17 AM »
Re: the same applies for hard acceleration.

Perhaps for  short acceleration times, remember that braking times from 60 to zero are smaller than acceleration times from zero to 60 so power in from brakes is greater than power out during acceleration

The best braking times are 2.7-3 sec on performance cars with performance tires. Acceleration times from 0-60 in a performance car like a tesla is about twice that.

sidd

For current / future electric cars I don't think that it is necessary. Even for my car with a 'small' battery of 28 kWh the recuperation works for up to 80 (88?) kW. For the upcoming generation I guess we are talking about 200 kW - as the normal charge rate is already 150 kW.
Even the 80 kW are quite a lot and for 'normal' braking this will not be exceeded. Only for emergency braking this will not suffice. As this will not occur to often I don't see how this would justify to add ultra caps.

NeilT

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Re: Batteries: Today's Energy Solution
« Reply #1079 on: February 05, 2019, 03:14:49 PM »
Given that battery capacity is on the rise for the family car, I can see it as a problem which will, eventually, go away.  Where it is an issue is in heavy trucks where downhill braking can become a real issue and even moderate braking due to an issue on the road can produce extremely high levels of energy.
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sidd

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Re: Batteries: Today's Energy Solution
« Reply #1080 on: February 05, 2019, 07:06:59 PM »
Rather than capacity, the actual limit is safe charging rates, which as was pointed out, is also increasing.

sidd

Sigmetnow

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Re: Batteries: Today's Energy Solution
« Reply #1081 on: February 05, 2019, 09:58:43 PM »
News from a few days ago.  New here?

New Battery Cell Patented By Tesla: Faster Charging, Lower Cost
Quote
Even though the news about a new patent comes after a few years of relative silence from Jeff Dahn, people affiliated with the battery industry knew that something was cooking for years. It was well-known (within the battery industry, at least) that Jeff, together with his group, was working on a solution that uses additives to the electrolytes within Li-ion batteries. Designed to increase the performance of the chemistry within the cells, these additives are a key ingredient in this research and the subsequent patent application. And now, after years of research, the group applied on a patent for this technology and made it public last night. The technology is called ‘Novel battery systems based on two-additive electrolyte systems’ and it promises an impressive leap in battery tech.

The documentation attached to the patent application reveals how Dahn and his team were able to prove that using several additives to Li-ion batteries can improve the battery performance, lifetime expectancy, but also, cut the production costs associated with Li-ion battery cells as well. If you dug deeper into the matter, you’ll find out that, generally, five additives are needed. However, Dahn and his team came up with a solution where only two are used to deliver the same results. Quite fascinating!
https://insideevs.com/new-battery-cell-patented-by-tesla/
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Sebastian Jones

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Re: Batteries: Today's Energy Solution
« Reply #1082 on: February 15, 2019, 05:57:30 AM »
The worlds largest battery will now be in Abu Dhabi rather than Australia- 5 times the size of South Australia's Tesla installation. Another difference? It is not a lithium battery.https://cleantechnica.com/2019/02/03/sodium-sulfur-battery-in-abu-dhabi-is-worlds-largest-storage-device/

Sigmetnow

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Re: Batteries: Today's Energy Solution
« Reply #1083 on: February 16, 2019, 12:50:39 AM »
Shell continues green energy acquisitions with home battery/EV charger company Sonnen
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Shell has announced its acquisition of Sonnen, a German company that specializes in home energy storage. Mostly known for its home battery packs, Sonnen also expanded into home EV charging last year.
https://electrek.co/2019/02/15/shell-sonnen-ev-battery/

Big Oil buying a battery producer? ??? Let’s hope they intend to grow the business, not quash it.
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sidd

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Re: Batteries: Today's Energy Solution
« Reply #1084 on: February 16, 2019, 05:18:31 AM »
Sonnen make a good product for home applications. Shipping time is a lot shorter than Tesla powerpack.

sidd

Bruce Steele

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Re: Batteries: Today's Energy Solution
« Reply #1085 on: February 16, 2019, 05:50:49 AM »
My power wall supplier says it will be months or maybe even a year until they can deliver, ostensibly due to a battery shortage. Not that I am going to change my mind but it would be interesting to know how well Sonnen can be programmed to deal with Time Of Use electricity plans mandated for all Calif utilities within the next year. That is one of the primary benefits of a power wall system and app.

sidd

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Re: Batteries: Today's Energy Solution
« Reply #1086 on: February 16, 2019, 06:35:31 AM »
Sonnen has very sophisticated charge controller, i think it will do what you want. I used to have the fone number for a sonnen guy, but i think he has moved on. Call em up.

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Archimid

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Re: Batteries: Today's Energy Solution
« Reply #1087 on: February 23, 2019, 06:53:54 PM »
New refillable batteries could fuel an electric car revolution


https://www.nbcnews.com/mach/amp/ncna974556

Quote
Like the lithium-ion batteries that power most electric vehicles on the road today, flow batteries release energy through chemical reactions between the ends of the battery and a substance known as electrolyte. In a lithium-ion battery, the electrolyte sits between the ends of the battery; when it’s depleted, it has to be recharged. In a flow battery, the electrolyte is pumped from a tank through the battery; when it’s depleted, it can simply be swapped out for a fresh batch.
I am an energy reservoir seemingly intent on lowering entropy for self preservation.

vox_mundi

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Re: Batteries: Today's Energy Solution
« Reply #1088 on: March 01, 2019, 05:37:52 PM »
Team Develops Thermoelectric Device that Generates Electricity Using Human Body Heat
https://phys.org/news/2019-03-team-thermoelectric-device-electricity-human.html

The Electronics and Telecommunications Research Institute (ETRI) in South Korea developed a thermoelectric module that generates electricity using human body heat. The module, which is 5 cm in width and 11 cm in length, can convert body heat energy into electricity and amplify it to power wearable devices.

It has been confirmed that when six devices are modularized in a bundle, they can generate up to a commercialization level of 2~3 milliwatts (mW). Unlike disposable batteries, they can continuously generate energy from the human body temperature.


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Ken Feldman

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Re: Batteries: Today's Energy Solution
« Reply #1089 on: March 01, 2019, 06:33:49 PM »
Semi-solid state batteries (I didn't even know such a thing existed) have achieved improvements in energy density over traditional lithium ion batteries:

https://oilprice.com/Energy/Energy-General/Are-Semi-Solid-State-Batteries-A-Gamechanger.html

Quote
The EV battery race intensified this week with the announcement that a startup financially supported by the U.S. Department of Energy had released a lithium ion battery that stores more energy than the 250 Wh EV industry benchmark.

The company, 24M, said its semi-solid state nickel-manganese-cobalt battery had achieved an energy density of 280 Wh and that its approach to battery building would allow it to hit a target of 350 Wh by the end of the year. The target was set by the U.S. Advanced Battery Consortium that, together with the Department of Energy, provided 24M with US$7 million in funding back in 2016.

Archimid

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Re: Batteries: Today's Energy Solution
« Reply #1090 on: March 11, 2019, 11:31:34 PM »
24M Delivers First Commercial Scale, High Energy Density SemiSolid Lithium-ion Batteries

http://24-m.com/pressrelease/

Quote
CAMBRIDGE, Mass. – February 26, 2019 – 24M announced today it has developed and delivered commercially viable, high energy density lithium-ion cells. Using its novel SemiSolid lithium-ion battery design in its pilot facility, 24M achieved energy densities exceeding 250 watt-hours per kilogram (Wh/kg), the current state-of-the-art industry benchmark for EV applications. These deliveries represent a significant milestone in the 24M mission to scale its unique, capital-efficient, low-cost approach to advanced lithium-ion battery manufacturing
...

24M also delivered similar NMC cells with energy densities above 280 Wh/kg to an industrial partner. With these cells, the higher energy densities were achieved by optimizing 24M’s SemiSolid electrode technology, which eliminates the use of a pore-clogging binder, enabling higher active material densities than can be achieved with conventional electrodes. The demonstration of this technology is a major milestone on the 24M roadmap to achieving even higher energy densities (>400 Wh/kg) using its capital-efficient manufacturing process.

I have to wonder who is the industrial partner who received these batteries. Maybe Porsche?
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Sigmetnow

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Re: Batteries: Today's Energy Solution
« Reply #1091 on: March 18, 2019, 06:24:25 PM »
How the Tesla big battery kept the lights on in South Australia
Quote
Our initial report has now been underscored by a detailed study from the Australian Energy Market Operator, which looked at why more than 1,190MW of load was shed in three states, why Queensland operated for nearly an hour and a half in an insecure state that could have gone pear-shaped very quickly, and why renewables-dominated South Australia had the most secure grid during the events.

The report underlines a few important points.

One, is that the Tesla big battery, again, proved itself to be an exceptionally valuable asset in the face of such events. It was the quickest to respond and showed a versatility un-matched by any other asset, and its efforts ensured that South Australia’s was the only state grid not to suffer widespread losses or operate in an insecure state, despite its high share of renewables.

Point two is that Australia’s ageing and slow-moving legacy assets reacted poorly, and it is increasingly clear that they are going to create headaches for the market operator as it manages the energy transition, and seeks to perform the energy equivalent of the shift from analogue to digital.

Three: new technologies such as wind farms and rooftop solar inverters are also throwing curve balls, with unexpected responses to different situations.

And four; the market operator and the rule-maker need to act quickly and decisively to bring in rules that are useful to the latest technology, and not those of the last century. ...
https://reneweconomy.com.au/how-the-tesla-big-battery-kept-the-lights-on-in-south-australia-20393/
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