What is the difference between High Nickel NCM and NCA?

What is the difference between High Nickel NCM and NCA?

With the gradual increase of the energy density of power batteries, ternary materials have become the mainstream materials of power batteries, and driven by the increasing specific energy, ternary materials are also developing towards higher-capacity high-nickel materials. Currently we have two main choices: NCM and NCA.

NCM cathode material means: Lithium Nickel Cobalt Manganese Oxide LiNiMnCoO2. Include NCM 811, NCM 622, NCM 523, NCM 111.

NCA cathode material full name: Lithium Nickel Cobalt Aluminum Oixde.

NCM and NCA with the same nickel content, the capacity of NCM is higher than NCA, because the nickel in NCA is 3 valence, it changes to 4 valence, there is only one electron change, and Ni in NCM is 2 valence, there are two valence state changes And lithium-nickel mixed discharge is serious, which is why the first effect of NCA is higher than NCM, and the precipitation ph of Al ions and ncm precipitation ph differ greatly, it is difficult to obtain a uniform nca precursor, so a better nca precursor is obtained are also some difficulties!

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