US 12,243,976 B2
Lithium-ion battery of fast-charging capability
Wenzhu Xu, Ningde (CN); Chuanmiao Yan, Ningde (CN); Fuping Luo, Ningde (CN); Xinxin Du, Ningde (CN); and Jiao Cao, 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 Oct. 4, 2022, as Appl. No. 17/959,991.
Application 17/959,991 is a division of application No. 16/443,371, filed on Jun. 17, 2019, granted, now 11,502,328.
Claims priority of application No. 201810695616.3 (CN), filed on Jun. 29, 2018; and application No. 201910095235.6 (CN), filed on Jan. 31, 2019.
Prior Publication US 2024/0113273 A1, Apr. 4, 2024
Int. Cl. H01M 10/0525 (2010.01); H01M 4/02 (2006.01); H01M 4/131 (2010.01); H01M 4/133 (2010.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/587 (2010.01); H01M 10/04 (2006.01)
CPC H01M 10/0525 (2013.01) [H01M 4/02 (2013.01); H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/587 (2013.01); H01M 10/0459 (2013.01); H01M 2004/021 (2013.01)] 20 Claims
 
1. A lithium-ion battery comprising a positive electrode plate, a negative electrode plate, a separator and an electrolyte, the positive electrode plate comprising a positive current collector and a positive film, the positive film being provided on at least one surface of the positive current collector and comprising a positive active material, the negative electrode plate comprising a negative current collector and a negative film, the negative film being provided on at least one surface of the negative current collector and comprising a negative active material;
wherein:
the positive active material comprises a layered lithium-containing compound, and the layered lithium-containing compound comprises lithium nickel cobalt manganese oxide or lithium nickel cobalt aluminum oxide;
the negative active material comprises graphite;
the positive film and the negative film satisfy a relationship 0.3≤(OIc×PDc)/(OIa×PDa)≤20.0;
OIc represents an OI value of the positive film, and OIc-C003/C110, C003 represents characteristic diffraction peak area of (003) crystal plane in X-ray diffraction pattern of the positive electrode plate, C110 represents characteristic diffraction peak area of (110) crystal plane in X-ray diffraction pattern of the positive electrode plate;
PDc represents a pressing density of the positive film with a unit of g/dm3;
OIa represents an OI value of the negative film, and OIa-C004/C110, C004 represents characteristic diffraction peak area of (004) crystal plane in X-ray diffraction pattern of the negative electrode plate, C110 represents characteristic diffraction peak area of (110) crystal plane in X-ray diffraction pattern of the negative electrode plate;
PDa represents a pressing density of the negative film with a unit of g/dm3;
the OI value of the positive film represented by OIc is 8-70; and
an OI value of a powder of the positive active material represented by Gor is from 3 to 15, wherein, Gor-C003/C110, C003 represents characteristic diffraction peak area of (003) crystal plane in X-ray diffraction pattern of the powder of the positive active material, C110 represents characteristic diffraction peak area of (110) crystal plane in X-ray diffraction pattern of the powder of the positive active material.