Patent · US Active

Si based negative electrode material

US9054381B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

UMICORE · BE

Inventors

Michael Gilles · Milltown, US
Kris Driesen · Olen, BE
Stijn Put · Olmen, BE

Key dates

Filing date	Oct 27, 2011
Grant date	Jun 9, 2015
Priority date	—
Expiry date	Feb 11, 2032

Classification

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

Abstract

A negative electrode active material for a lithium ion battery having the composition formula SiaSnbNicTiyMmCz, wherein a, b, c, y, m and z represent atomic % values, wherein M is either one of more of Fe, Cr and Co, and wherein a>0, b>0, z>0, y≧0, 0≦m≦1, c>5, z+0.5*b>a and c+y>0.75*b. The process for preparing the active material comprises the steps of:—providing a mixture of elemental and/or alloyed powders of the elements in the composition SiaSnbNicTiyMmCz, and—high energy milling under non-oxidizing conditions of the powder mixture.

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