Method of preparing a negative active material for...

Details Method of preparing a negative active material for... Method of preparing a negative active material for...

2008-07-30

2010-02-09

Kopec, Mark (Department: 1796)

Compositions

Electrically conductive or emissive compositions

Metal compound containing

C029S623100, C427S058000, C429S218100, C429S232000

Reexamination Certificate

active

07658871

ABSTRACT:
Disclosed is a negative active material for a rechargeable lithium battery comprising a Si phase, a SiM phase and at least one of a X phase and a SiX phase, wherein each of phases has a crystal grain size of 100 nm and 500 nm. The element M is at least one selected from the group consisting of Ni, Co, B, Cr, Cu, Fe, Mn, Ti, and Y, the element X is at least one selected from the group consisting of Ag, Cu, and Au. However, where M is Cu, X is not Cu.

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