this post was submitted on 22 Aug 2023
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Fuck Cars

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[–] [email protected] 9 points 10 months ago (11 children)

There are lots of lithium battery types that do not contain any cobalt, such as LFP that is used more and more for electric cars.

[–] [email protected] 7 points 10 months ago* (last edited 10 months ago) (5 children)

Also Sodium Ion (Na-Ion) batteries are currently in production and could be a viable alternative as the technology advances and production ramps up.

Right now Na-Ion batteries rival only the LFP type of Li-Ion battery (lithium-iron-phosphate) having a lower energy density than other Lithium chemistries. LFP is used commonly in utility power storage for its much greater safety and longevity, but it carries about 20% less power for size and weight compared to other lithium chemistries.

At present the favored battery type for EVs are Lithium types with the highest energy density. Some combine several advantages of the various Li-Ion chemistries having the highest energy density with somewhat greater safety and longevity.

Na-Ion is a new type of battery chemistry with lots of potential for improvement. They use more sustainable materials being cheaper and more abundant. If they could get the Na-Ion battery type within range of presently used Lithium technologies it would be a hugely better solution, a lot cheaper, a lot safer, and much easier on the environment.

[–] [email protected] 0 points 10 months ago (4 children)

@rm_dash_r_star @notapantsday Is LMFP actually available in quantity? Wikipedia suggests not.

The problem with sodium ion batteries, apart from lower density, is that they have a shorter lifespan. On the upside they're easier to recycle. IIRC there was some recent research that might fix the lifespan problem.

[–] [email protected] 1 points 10 months ago* (last edited 10 months ago)

Is LMFP actually available in quantity? Wikipedia suggests not.

I realized that, I put an edit on there to not specify LMFP which has only been used in EVs in a limited fashion. I was confusing NMC which is actually the most common, oops. I changed it to a generic reference.

The problem with sodium ion batteries, apart from lower density, is that they have a shorter lifespan.

I've read differing reports on that. But yeah, cycle life is a big deal. In general it's not great for the common Li-Ion types. LFP has pretty amazing cycle life, about five times greater and rivals the NiMH king. In many cases it's well worth the additional size and weight, but for things sensitive to it like cars and handheld devices it's a problem.

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