4 ms·
Batteries are great, but some of those charts look off. Where are they getting batteries that are 500Wh/kg for commercial applications? Even state of the art N
by antisthenes 3y ago
Batteries are great, but some of those charts look off.
Where are they getting batteries that are 500Wh/kg for commercial applications? Even state of the art NMC cells in the 21700 and 46800 form factors barely scrape at 300Wh/kg, and everything else (LFP) is significantly below that number.
- futevolei 3y agoFor real. I’m trying to diy a battery now with 304ah lifepo4 cells and it works out to 125wh/kg. Doesn’t seem like even 300wh/kg will trickle down to the public anytime soon.
- defrost 3y agoThe charts are reflecting bleeding edge industry results .. some may yet fail repeatable verification. The 500wh/kg figures come from at least two companies nine months ago - one might be a US arm of the other: https://www.catl.com/en/news/6015.html https://www.catl.com/en/news/6015.html https://amprius.com/the-all-new-amprius-500-wh-kg-battery-platform-is-here/ https://amprius.com/the-all-new-amprius-500-wh-kg-battery-pl... Both have asserted idependant verification. High energy density isn't the only desirable goal of course. Really cheap, bulk storage, hard to damage, with long lifetime and many recharge cycle batteries are good for grids even if they're too heavy for the mobile | car market. https://en.wikipedia.org/wiki/Vanadium_redox_battery https://en.wikipedia.org/wiki/Vanadium_redox_battery ,for example, have a promising future in not { car | phone } applications.