Patent · US Active

High voltage negative active material for a rechargeable lithium battery

US8628694B2 · kind B2 · utility

0Cited by

1References

16Claims

0Family size

Assignees

UMICORE · BE
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR
Université Montpellier · FR
SAFT GROUPE SA · FR

Inventors

Michèle Van Thournout · Liège, BE
Laure Monconduit · Jacou, FR
Claire Villevieille · Marguerittes, FR
Josette Olivier-Fourcade · Jacou, FR
Jean-Claude Jumas · Jacou, FR
Cécile Tessier · Bruges, FR

Key dates

Filing date	Feb 10, 2010
Grant date	Jan 14, 2014
Priority date	—
Expiry date	Jun 6, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to active material for the negative electrode of secondary rechargeable lithium batteries, wherein the active material is based on doped or undoped carbon-bearing lithium titanium ramsdellite oxide with general formula Li2Ti3O7 or Li2.28Ti3.43O8. The active material comprises a carbon substituted ramsdellite phase having a general formula Li2−4cCc—Ti3O7, with 0.1<c<0.5, and more than 0.1 mol % of spinel phase having a general formula Li1+xTi2−xO4 with 0<x<0.33.

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