Why is there more lithium carbonate than lithium cobaltate when synthesizing NCM?

1, plum volatilizes at high temperature. Generally speaking, the synthesis temperature of LiCoO2 is higher than that of NCM, and the former volatilizes more normally, so volatilization is not the key factor to determine the ratio.

2. There is a mixture of Li and Ni. In order to reduce impurity lithium, there is more excess lithium. Both 3M and yomi Cole have related patents, but there seems to be no high-quality paper data to prove it.

3. NCM has a porous structure, and the lithium salt has poor dispersibility, and the excess is mostly to ensure the contact area during melting.