US 12,294,085 B2
Cathode material, and electrochemical device including the same
Wenyuan Liu, Ningde (CN); Gang Peng, Ningde (CN); Ye Lang, Ningde (CN); and Leimin Xu, Ningde (CN)
Assigned to NINGDE AMPEREX TECHNOLOGY LIMITED, Ningde (CN)
Filed by NINGDE AMPEREX TECHNOLOGY LIMITED, Fujian (CN)
Filed on Jan. 31, 2024, as Appl. No. 18/428,051.
Application 18/428,051 is a continuation of application No. 17/252,144, granted, now 11,936,042, previously published as PCT/CN2020/082246, filed on Mar. 31, 2020.
Claims priority of application No. 201910654647.9 (CN), filed on Jul. 19, 2019.
Prior Publication US 2024/0170664 A1, May 23, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/525 (2010.01); H01M 4/36 (2006.01); H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
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)] 18 Claims
OG exemplary drawing
 
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 each 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, each fourth particle is a second primary particle, the plurality of second particles have an average particle diameter of 3 μm to 5 μm, the plurality of fourth particles have an average particle diameter of 800 nm to 5 μm, and the each second particle comprises a second lithium-containing transition metal oxide;
wherein a peak intensity ratio of the (003) diffraction peak of the X-ray diffraction of the second particles to that of the first particles is 1.03 to 1.6, a difference between full width at half maximum of the (003) diffraction peak of the X-ray diffraction of the first particles and that of the second particles being 0.003° to 0.008°.