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Car Prices Might Be Unsustainable for Buyers
(www.wsj.com)
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this post was submitted on 22 Aug 2023
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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.
@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.
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.
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.
sodium is just tech bro fluff
@rm_dash_r_star @notapantsday Unfortunately batteries with nickel are still pretty widely used. However it's definitely going in the right direction.
https://www.iea.org/reports/global-ev-outlook-2023/trends-in-batteries
In any case digging up fossil fuels is also pretty dirty, and has been known to pollute indigenous people's drinking water, steal their land, and on occasion pay for private militias and government troops to put down protests.
Obviously electric buses are preferable to electric cars. Public transport is worth investing in.
Also on batteries, iron-air is promising for grid storage, but not likely to be used for vehicles.
There isn't much in industry exempt from that kind of thing, but countries go to war over access to oil. Anything that reduces consumption is good for mankind.