3 ms·
There is hardly anything ground breaking here and can't help noticing quite a few loopholes. First, LFPs with high C rates is nothing new -- anybody remember A
by tooltalk 3y ago
There is hardly anything ground breaking here and can't help noticing quite a few loopholes.
First, LFPs with high C rates is nothing new -- anybody remember A123? Even Samsung SDI developed their own LFP with much higher C over a decade ago, though it was never commercially successful (it was pre-LFP EV era). This is however going to probably end up reducing LFP's battery lifecycle. All lithium-ion batteries degrade faster under high SOC and high C; though NCM/A handles high C better.
Second, this PR also claims that the new chemistry would enable 700km without a single mention of energy density kWh/kg improvement? LFP has low energy density and is much heavier than NCM/A -- likewise they are mostly limited to entry-level, low-range EVs, under ~60 kWh. China's average EV battery capacity is just over 50 kWh and those EVs don't travel nearly that far. This maybe suitable for larger vehicles with light load (eg, city buses with no significant load; or the Tesla Semi's carrying potato chips), so their target users are also fairly small.
Third, they are throwing in Zeekr 001 with 1000km with CATL's Quillin structural battery for good measure in this PR. And of course, the trim with the claimed 1000km range doesn't even use LFPs. LFPs are not simply suitable for anything long distance (higher energy density and less weight) or performance (higher C discharge rate). And this PR shows CATL's new battery just nothing burger.