CPC H01M 4/366 (2013.01) [C01G 53/50 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); C01P 2004/03 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01)] | 13 Claims |
1. A modified positive electrode material, comprising:
a core, the core being a positive electrode material containing a manganese element and a nickel element; and
a coating layer, the coating layer comprising a first oxide coating layer, the first oxide coating layer coating on a surface of the core by a mechanical fusion treatment, and a first element forming the first oxide coating layer comprising, one or more of a group consisting of Si, Ti, V, Zr, Mo, W, Bi, Nb, and Ru;
the modified positive electrode material further comprising: a second oxide coating layer, the second oxide coating layer coating on a surface of the core, and being arranged between the positive electrode material and the first oxide coating layer, and a second element forming the second oxide coating layer being selected from elements of Group IVB and/or Group VB;
the modified positive electrode material is denoted by the following general formula: Li1+iNixCoyMn(1-x-y)MmO2·[MO2]n, −0.05≤i≤0.2, 0.5≤x≤0.8, 0.05≤y≤0.3, 0≤m≤0.03, and 0≤n≤0.05, wherein M of Li1+iNixCoyMn(1-x-y)MmO2 represents the second element, and M of [MO2]n represents the first element.
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