Patent · US Active

Negative electrode material for lithium-based batteries

US9570752B2 · kind B2 · utility

25Cited by

1References

19Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Xiaosong Huang · Novi, US
Mei Cai · Bloomfield Hills, US

Key dates

Filing date	May 16, 2014
Grant date	Feb 14, 2017
Priority date	—
Expiry date	Jul 11, 2034

Classification

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

Abstract

A negative electrode material includes an active material, which is present in an amount ranging from about 60 wt % to about 95 wt % of a total wt % of the negative electrode material. The negative electrode material further includes a polyimide binder, which is present in an amount ranging from about 1 wt % to about 20 wt % of the total wt % of the negative electrode material. The polyimide binder contains a repeating unit, where a backbone structure of each repeating unit has no ether group present and no more than one carbonyl group present. The negative electrode material also includes a conductive filler, which is present in an amount ranging from about 3 wt % to about 20 wt % of the total wt % of the negative electrode material.

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