Why new battery technologies rarely-never appear
This Register article summarizes the situation better than anything I've seen yet. Goes over all the major alternatives to lithium ion: magnesium, lithium-sulphur, sodium ion, solid state, etc. etc. We got lithium-ion thru a confluence of economics (Sony's idle thin-film factories converted to battery film manufacture) and chemistry.
Looks as though we are stuck with lithium for a while.....
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