| 摘要 |
PROBLEM TO BE SOLVED: To provide a conductive material-coated silicon material having a small specific resistivity which is used as a negative electrode material for a non-aqueous electrolyte secondary battery and gives excellent cycle characteristics. SOLUTION: This is the conductive material-coated silicon having a small specific resistivity, and one kind or a plurality of kinds of boron, phosphorus, nitrogen, antimony, arsenic, aluminum, galium or indium are doped, and the surface of the powder particles of the silicon material which has a resistance value at wafer or ingot of 10Ωcm or less is coated by carbon containing much of crystalline component. COPYRIGHT: (C)2005,JPO&NCIPI |
