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> “Nickel manganese cobalt cells are also the choice of the German automobile industry when it comes to the next generation of electric cars,” Held said. Inter
by elihu 9y ago
> “Nickel manganese cobalt cells are also the choice of the German automobile industry when it comes to the next generation of electric cars,” Held said.
Interesting claim. I'm not familiar with NMC batteries.
Here's what wikipedia says:
> Handheld electronics mostly use LIBs based on lithium cobalt oxide (LiCoO2), which offers high energy density, but presents safety risks, especially when damaged. Lithium iron phosphate (LiFePO4), lithium ion manganese oxide battery (LiMn2O4, Li2MnO3, or LMO) and lithium nickel manganese cobalt oxide (LiNiMnCoO2 or NMC) offer lower energy density, but longer lives and less likelihood of unfortunate events in real world use, (eg, fire, explosion, ...). Such batteries are widely used for electric tools, medical equipment, and other roles. NMC in particular is a leading contender for automotive applications. Lithium nickel cobalt aluminum oxide (LiNiCoAlO2 or NCA) and lithium titanate (Li4Ti
5O12 or LTO) are specialty designs aimed at particular niche roles. The newer lithium–sulfur batteries promise the highest performance-to-weight ratio.
https://en.wikipedia.org/wiki/Lithium-ion_battery https://en.wikipedia.org/wiki/Lithium-ion_battery
So, it's another kind of lithium-ion battery.
- hwillis 9y agoYeah. It's a subset of Li-ion. Tesla vehicles use NCA and their stationary storage products use NMC [1]. They are pretty similar but NCA is lighter and cheaper and NMC has better cycle life (and hence long-term value). It makes sense to use NMC for this application since weight is a non-issue. They're both significantly cheaper than LCO (the most common) and because of that NMC has become a lot more common than it was. They're also much better behaved (ie happy to put out high-power bursts, temperature-stable, and less likely to ignite), but last longer than other chemistries like FePO4 (which not well behaved but quite hard to ignite). [1]: http://fortune.com/2015/05/18/tesla-grid-batteries-chemistry/ http://fortune.com/2015/05/18/tesla-grid-batteries-chemistry...