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Negative electrode plate, electrochemical device containing same, and electronic device

Grant US12592390B2 Kind: B2 Mar 31, 2026

Assignee

NINGDE AMPEREX TECHNOLOGY LIMITED

Inventors

Wenhao Guan, Maohua Chen, Yuansen Xie

Abstract

A negative electrode plate includes a negative current collector, a lithium metal negative electrode, and a negative electrode framework. A polarization electric field exists inside the negative electrode framework. A direction of the polarization electric field is directed from a surface of the negative electrode to the negative current collector. A material of the negative electrode framework includes at least one of a piezoelectric polymer, piezoelectric ceramic, or piezoelectric monocrystal. The negative electrode plate can control lithium deposition sites, effectively suppress the growth of lithium dendrites, effectively mitigate volume expansion of the electrochemical device, and further improve cycle performance of the electrochemical device.

CPC Classifications

H01M 4/628 H01M 4/134 H01M 4/382 H01M 10/052 H01M 2004/021 H01M 2004/027 H01M 4/62 H01M 10/4235 H01M 4/13 H01M 4/139 H01M 4/667 H01M 10/0525 Y02E 60/10

Filing Date

2022-03-31

Application No.

17709572

Claims

15

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