Patent · US Active

Composite negative electrode material and method for preparing composite negative electrode material, negative electrode plate of lithium ion secondary battery, and lithium ion secondary battery

US10770720B2 · kind B2 · utility

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1References

20Claims

0Family size

Assignee

Huawei Technologies Co., Ltd. · CN

Inventors

Shengan Xia · Lo Wu, CN
Hui Li · Santa Clara, US
Fengchao Xie · Dongguan, CN

Key dates

Filing date	Oct 31, 2016
Grant date	Sep 8, 2020
Priority date	—
Expiry date	Mar 29, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A composite negative electrode material, a method for preparing the composite negative electrode material, a negative electrode plate of a lithium ion secondary battery containing the composite negative electrode material, and a lithium ion secondary battery containing a negative electrode active material of the lithium ion secondary battery, where the composite negative electrode material includes a carbon core and a carbon coating layer, where the carbon coating layer is a carbon layer that coats a surface of the carbon core, and both the carbon core and the carbon coating layer include a doping element, where the doping element is at least one of element N, P, B, S, O, F, Cl, or H.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.