发明名称 |
COMPOSITE PARTICLES, MANUFACTURING METHOD THEREOF, ELECTRODE MATERIAL FOR SECONDARY BATTERY, AND SECONDARY BATTERY |
摘要 |
Provided is positive electrode material for a highly safe lithium-ion secondary battery that can charge and discharge a large current while having long service life. Disclosed are composite particles comprising: at least one carbon material selected from the group consisting of (i) fibrous carbon material, (ii) chain-like carbon material, and (iii) carbon material produced by linking together fibrous carbon material and chain-like carbon material; and lithium-containing phosphate, wherein at least one fine pore originating from the at least one carbon material opens to outside the composite particle. Preferably, the composite particles are coated with carbon. The fibrous carbon material is preferably a carbon nanotube with an average fiber size of 5 to 200 nm. The chain-like carbon material is preferably carbon black produced by linking, like a chain, primary particles with an average particle size of 10 to 100 nm. |
申请公布号 |
US2014335419(A1) |
申请公布日期 |
2014.11.13 |
申请号 |
US201214358307 |
申请日期 |
2012.11.14 |
申请人 |
DENKI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
Kawasaki Takashi;Yoshino Nobuyuki;Murata Hiroshi;Sawai Takehiko;Saito Shinji;Urao Kazunori |
分类号 |
H01M4/36;H01M4/58;H01M4/583;H01M10/0525 |
主分类号 |
H01M4/36 |
代理机构 |
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代理人 |
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主权项 |
1. Composite particles comprising:
at least one carbon material selected from the group consisting of (i) fibrous carbon material, (ii) chain-like carbon material, and (iii) carbon material produced by linking together fibrous carbon material and chain-like carbon material; and lithium-containing phosphate, wherein at least one fine pore originating from the at least one carbon material opens to outside the composite particle. |
地址 |
Tokyo JP |