US 12,456,722 B2
Positive electrode active material composition, positive electrode plate, battery, and electric apparatus
Jianfu Pan, Ningde (CN); Xiaofu Xu, Ningde (CN); Yibo Shang, Ningde (CN); Yiming Qin, Ningde (CN); Xinyu Zhang, Ningde (CN); Renjie Pei, Ningde (CN); Jianfu He, Ningde (CN); Qian Liu, Ningde (CN); and Yonghuang Ye, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on May 16, 2025, as Appl. No. 19/210,797.
Application 19/210,797 is a continuation of application No. PCT/CN2024/074885, filed on Jan. 31, 2024.
Claims priority of application No. 202310300316.1 (CN), filed on Mar. 24, 2023.
Prior Publication US 2025/0279410 A1, Sep. 4, 2025
Int. Cl. H01M 4/505 (2010.01); C01B 25/16 (2006.01); C01B 25/26 (2006.01); C01B 25/45 (2006.01); H01M 4/131 (2010.01); H01M 4/133 (2010.01); H01M 4/136 (2010.01); H01M 4/1397 (2010.01); H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01); H01M 4/587 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/364 (2013.01) [H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 4/136 (2013.01); H01M 4/366 (2013.01); H01M 4/525 (2013.01); H01M 4/582 (2013.01); H01M 4/5825 (2013.01); H01M 4/587 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A positive electrode active material composition comprising a first positive electrode active material and a second positive electrode active material, wherein
the first positive electrode active material comprises a core and a coating layer covering the core; the coating layer comprises one or more of pyrophosphate, phosphate, and carbon; and the core comprises a compound LiaAbMnfB1-fP1-dRdO4-nDn, wherein
A comprises one or more elements of Zn, Al, Na, K, Mg, Nb, Mo, and W;
B comprises one or more elements of Ti, V, Zr, Fe, Ni, Mg, Co, Ga, Sn, Sb, Nb, and Ge;
R comprises one or more elements of B (boron), S, Si, and N;
D comprises one or more elements of S, F, Cl, and Br;
a is 0.9 to 1.1; b is 0 to 0.1; f is 0.1 to 0.999; d is 0 to 0.11; and n is 0 to 0.1;
the second positive electrode active material comprises a compound LiNixCoyM1-x-yO2, wherein M comprises one or more elements of Al, Mn, Mg, Nb, Ti, and Ba; 0.5≤x≤0.69; and 0<y<0.31;
and
0.018m+0.003f≤z≤0.02m+0.02f is satisfied,
wherein
m represents a mass percentage of the first positive electrode active material in the positive electrode active material composition; and
z represents a ratio of a coating layer thickness to a particle size Dv50 of the first positive electrode active material.