CPC H01M 4/525 (2013.01) [H01M 4/364 (2013.01); H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01)] | 16 Claims |
1. A cathode material, comprising:
a plurality of first particles, wherein each first particle comprises a secondary particle composed of a plurality of third particles, each third particle is a first primary particle, the plurality of first particles have an average particle diameter of 8 μm to 20 μm, the plurality of third particles have an average particle diameter of 200 nm to 700 nm, and the first particle comprises a first lithium-containing transition metal oxide; and
a plurality of second particles, wherein each second particle comprises a fourth particle and/or a secondary particle composed of a plurality of fourth particles, the fourth particle is a second primary particle, the second particle has an average particle diameter of 3 μm to 5 μm, the fourth particle has an average particle diameter of 800 nm to 5 μm, and the second particle comprises a second lithium-containing transition metal oxide,
wherein a ratio of the average particle diameter of the plurality of first particles to the average particle diameter of the plurality of third particles is 20 to 50; and
wherein a ratio Ds/Dp is 0.15 to 0.7, Ds is an average particle diameter of the plurality of second particles, and Dp is an average particle diameter of the plurality of first particles.
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