Patent ID: 11936042
Assignee: NINGDE AMPEREX TECHNOLOGY LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC H

Claim 9:
10. An electrochemical device, comprising a cathode, wherein the cathode comprises a cathode material, wherein the cathode material comprises:
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 particles 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.