Cathode material and process
AssigneeEpsilon Carbon Private Ltd.
InventorsSam Alexander, Christian Bruenig, Holger Kunz
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Abstract
The present invention belongs to the field of battery materials, and relates to a process for preparing a particulate lithium manganese nickel spinel compound, and materials produced by the process. The process of the invention uses Mn-containing precursors, Ni-containing precursors, Li-containing precursors and optionally M-containing precursor which form substantially no NOx gases during calcination. The particulate lithium manganese nickel spinel compound product of the process may find use in a lithium ion battery.
Claims20
A process for the preparation of a particulate lithium manganese nickel spinel compound, the process comprising:
- (a) milling a composition comprising a Mn-containing precursor, a Ni-containing precursor and a Li-containing precursor, wherein the Mn-containing precursor before milling has a D90 particle size of from about 2.0 μm to about 4.0 μm;
- and
- (b) calcining the product of step (a);
- wherein substantially no NOx gases are formed during the calcination in step (b) beyond impurities or trace amounts obviating the need for exhaust gas treatment, wherein NOx gases comprise NO, NO2 or a mixture thereof.
Dependencies are inferred from the claim text.