| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a powder for lithium ion battery negative electrode material whose main constituent elements are Co, Sn and Fe. <P>SOLUTION: The powder for lithium ion battery negative electrode material comprises Co-Sn-Fe alloy and has an alloy composition where the mass% ratio of the sum of Fe and Co to Sn satisfies the formula: (Co+Fe):Sn=5:5 to 1:9, and the mass% ratio of Fe to Co satisfies the formula: Co:Fe=1:3 to 3:1. Moreover, the powder for lithium ion battery negative electrode material is characterized in that one or more of Ti, In, C, Si and Ag are added at 0.1 to 10%. <P>COPYRIGHT: (C)2009,JPO&INPIT |
