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Steakosaurus t1_ja3sm26 wrote

Yeah and those are really functions of the energy density of the chemistry.

I would argue that things like overcharge and impact/crush are less of a concern as we move forward, since overcharge has been largely made a nonfactor by more sophisticated charging software and impact is largely addressed with proper pack design, but LFP definitely remains an attractive option from the safety point of view.

Primarily, the relatively good thermal prop performance is what many are interested in. High nickel chemistries have a lot of latent energy and volatile electrolytes that make battery fires aggressive and dangerous. LFP, having far lower latent energy, is much less prone to a runaway reaction - in which the becomes hot enough to self perpetuate an ignition burning through it's electrolyte and active material - which means it's far less likely to propagate to nearby cells and cause a chain reaction that we see as a massive EV car fire.

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