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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28238
Location: escaped from Swindon
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 Posted: Sun Oct 20, 24 10:44 am Post subject: |
 
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Battery claims
The following link is to the complete list of claims I have been compiling.
https://martindavidwalker.blogspot.com/2024/09/battery-claims.html
The new claims in the last week are as follows.
October 18th 2024, Chery to launch solid-state battery in 2026 and launches fast charging LFP batteries now
The solid-state claim is an aim of 600wh/kg in 2025 which would casually give EVs more range than most ICE cars with a much lighter battery than in current EVs.
The LFP claim is 400 km of range on a 5 minute charge, but the batteries seem far less energy dense than what CATL and BYD are offering. Cycle life is 3000 e.g. good for easily 600,000 miles.
https://carnewschina.com/2024/10/18/chery-to-launch-solid-state-battery-in-2026-and-launches-ultra-fast-charging-6c-batteries-now/
October 14th, 2024 Hyundai aim for 300wh/kg LFP batteries in 2025
This invites a number of responses!
Is it pure hyperbole? Some of the article gives that impression, but a claim of 2025 lends credibility.
300wh/kg takes a typical 210 mile range LFP EV from 2024 and makes it a 350 miles range EV with a smaller/lighter/cheaper battery.
Plus of course LFP has advantages over Lithium Ion, there are no controversial Nickel or Cobalt and you can charge to 100% as a matter of course. Never mind the fact they are cheaper and far less prone to thermal runaway and have much greater cycle life.
https://electrek.co/2024/10/14/hyundai-develop-industry-leading-300wh-kg-lfp-ev-batteries/
October 12th, 2024 quick and easy Sodium battery anodes
Perhaps not very exciting, but a good example of the innovations that constantly drive the costs of battery production down. Good news for sodium batteries is good news for Lithium prices and hence good news for EVs.
https://techxplore.com/news/2024-10-quick-easy-anode-materials-sodium.html
October 10th 2024 more fast charging news from an unlikely source!
Fast charging claims come thick and fast. This one is still in the lab, but hey it's a slow news week and it's an interesting read.
https://www.topgear.com/car-news/future-tech/new-doped-solid-state-batteries-can-charge-80-cent-just-nine-minutes |
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28238
Location: escaped from Swindon
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| Posted: Sun Oct 27, 24 11:04 am Post subject: |
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Battery claims
The following link is to the complete list of claims I have been compiling.
https://martindavidwalker.blogspot.com/2024/09/battery-claims.html
The new claims in the last week are as follows.
Pay attention this week to the sheer number of solid state claims and the youtube video at the end!
October 24th 2024, CATL develops a long range PHEV battery utilising sodium ion technology
This seems to be as I suggested would happen years ago a hybrid battery where a sodium layer buffers a lithium battery for operation in -40c conditions. It is intended for use in range extending PHEVs where an ICE tops up the battery and is not part of the drivetrain. Personally I think that sounds extremely problematic, liquid fuel has a shelf life and with 400km range outside of an abnormal use case it would create problems.
https://carnewschina.com/2024/10/24/catl-launches-battery-for-phevs-with-400-km-range-and-4c-charging-for-bev-like-experience/
October 24th 2024, China's GNE develops lithium sulfur batteries with 700wh/kg energy density
The claim is that life cycle issues have been “mitigated”. Forget cars! That sort of energy density would change the face of aviation and trucking. Plus Lithium Sulfur has a theoretical limit of 2,600wh/kg.
https://www.ess-news.com/2024/10/23/chinas-gne-develops-lithium-sulfur-battery-with-energy-density-of-700wh-kg/
October 24th 2024, Quantumscape begins production of 300wh/kg solid-state batteries
Small scale production being sampled to automakers. Its cells are the first anode-free solid-state lithium-metal cells ever produced. The charge time is under 15 minutes. Once again this would turn 210 mile range EVs with LFP batteries into having a 350 mile range. Remarkably this is the fourth similar reputable announcement this week.
https://electrek.co/2024/10/23/quantumscape-begins-production-b-sample-solid-state-cells-oem-testing/
October 23rd 2024, Harvard seek to take fast charging solid-state battery to production
Claimed to have a 6000 cycle life, which equates to over 2 million miles and 10 minute charging. As ever lab to production line is the rocky road.
https://electrek.co/2024/10/23/harvard-solid-state-battery-charges-in-minutes/
October 21st 2024, What happened to the million mile battery
I don't habitually include youtube videos or generalized pieces, but I am making an exception here as it is really educational, packing a lot into 15 minutes.
https://youtu.be/ksGUMbXJ4Eo?si=vLbjmIDOpHl4oWzx |
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28238
Location: escaped from Swindon
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28238
Location: escaped from Swindon
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dpack
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jema
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Location: escaped from Swindon
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dpack
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28238
Location: escaped from Swindon
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gz
Joined: 23 Jan 2009
Posts: 8952
Location: Ayrshire, Scotland
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28238
Location: escaped from Swindon
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28238
Location: escaped from Swindon
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jema
Downsizer Moderator
Joined: 28 Oct 2004
Posts: 28238
Location: escaped from Swindon
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