发明名称 |
Negative electrode material for secondary battery with non-aqueous electrolyte, method for manufacturing negative electrode material for secondary battery with non-aqueous electrolyte, and lithium ion secondary battery |
摘要 |
The present invention is a negative electrode material for a secondary battery with a non-aqueous electrolyte comprising at least a silicon-silicon oxide composite and a carbon coating formed on a surface of the silicon-silicon oxide composite, wherein at least the silicon-silicon oxide composite is doped with lithium, and a ratio I(SiC)/I(Si) of a peak intensity I(SiC) attributable to SiC of 2¸=35. 8±0.2° to a peak intensity I(Si) attributable to Si of 2¸=28.4±0.2° satisfies a relation of I(SiC)/I(Si)‰¤0.03, when x-ray diffraction using Cu-K± ray. As a result, there is provided a negative electrode material for a secondary battery with a non-aqueous electrolyte that is superior in first efficiency and cycle durability to a conventional negative electrode material. |
申请公布号 |
EP2372817(A1) |
申请公布日期 |
2011.10.05 |
申请号 |
EP20110002386 |
申请日期 |
2011.03.22 |
申请人 |
SHIN-ETSU CHEMICAL CO., LTD. |
发明人 |
KAWADA, NOBUO |
分类号 |
H01M4/134;C01B6/24;C23C16/26;C23C16/44;H01M4/36;H01M4/48;H01M4/485;H01M10/052 |
主分类号 |
H01M4/134 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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