	US 12,412,904 B2
	Negative electrode plate, electrochemical device, and electronic device
Xiaoping Lin, Fujian (CN); Maohua Chen, Fujian (CN); and Yuansen Xie, Fujian (CN)
Assigned to Ningde Amperex Technology Limited, Ningde (CN)
Filed by Ningde Amperex Technology Limited, Fujian (CN)
Filed on Mar. 31, 2022, as Appl. No. 17/709,660.
Application 17/709,660 is a continuation of application No. PCT/CN2021/084495, filed on Mar. 31, 2021.
Prior Publication US 2022/0328845 A1, Oct. 13, 2022
Int. Cl. H01M 4/78 (2006.01); H01M 4/02 (2006.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01)

CPC H01M 4/78 (2013.01) [H01M 4/661 (2013.01); H01M 4/663 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)]

19 Claims

1. A negative electrode plate, comprising:

a three-dimensional framework structure, wherein the three-dimensional framework structure comprises fibers and rigid particles, a Mohs hardness of the rigid particles is greater than or equal to 2, and an elastic modulus of the rigid particles is greater than or equal to 40 Gpa; and

a negative current collector, wherein the three-dimensional framework structure is located on the negative current collector; and in the three-dimensional framework structure, a mass percent of the rigid particles decreases with the increase in distance from the negative current collector.