	US 11,721,811 B2
	Negative electrode plate and secondary battery
Yaping Huang, Ningde (CN); Mingkui Guo, Ningde (CN); Yaohui Wang, Ningde (CN); Yongshou Lin, Ningde (CN); and Fenggang Zhao, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed on Dec. 23, 2020, as Appl. No. 17/132,506.
Application 17/132,506 is a continuation of application No. PCT/CN2019/076661, filed on Mar. 1, 2019.
Claims priority of application No. 201810989451.0 (CN), filed on Aug. 28, 2018.
Prior Publication US 2021/0111410 A1, Apr. 15, 2021
Int. Cl. H01M 4/66 (2006.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 4/36 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)

CPC H01M 4/661 (2013.01) [H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/366 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)]

15 Claims

1. A secondary battery, comprising a negative electrode plate, wherein:

the negative electrode plate comprises a negative electrode current collector, a first negative electrode active substance layer disposed on at least one surface of the negative electrode current collector, and a second negative electrode active substance layer disposed on the first negative electrode active substance layer;

the first negative electrode active substance layer comprises a first negative electrode active substance, and the second negative electrode active substance layer comprises a second negative electrode active substance; and

the first negative electrode active substance satisfies 1 GPa≤Young's modulus≤10 GPa, and the second negative electrode active substance satisfies 11 GPa≤Young's modulus≤30 GPa.