3 ms·
Gravimetric energy capacity limits range, which is why ICE cars outcompeted electric cars for a century until the batteries got Goodenough. Basically the probl
by kragen 1y ago
Gravimetric energy capacity limits range, which is why ICE cars outcompeted electric cars for a century until the batteries got Goodenough.
Basically the problem is that, once most of the vehicle's weight
is battery, adding 5× the battery capacity adds 5× the weight and thus 5× the rolling resistance, so it only increases the range slightly.
LFP has historically been inferior to other lithium-ion chemistries like NMC in gravimetric energy density, so the range of the resulting vehicle is a major consideration.
- deleted 1y ago[deleted]
- _ea1k 1y agoI understood that reference. :) One funny thing though... the issues have had more to do with volumetric energy capacity than weight. See also tests like this: https://www.youtube.com/watch?v=UmKf8smvGsA https://www.youtube.com/watch?v=UmKf8smvGsA That's why vehicles like Semi trucks can get by with batteries that are only ~4x bigger than a Silverado EV, weigh 8.5x more, and still manage to also produce higher ranges.
- kragen 1y agoHmm, really? Maybe I'm not understanding the most important issues.