发明名称 |
POSITIVE-ELECTRODE MATERIAL FOR A LITHIUM ION SECONDARY BATTERY, AND MANUFACTURING METHOD THEREFOR |
摘要 |
Provided is a positive electrode material for a safe, high capacity, long lifetime lithium ion secondary battery capable of large current charging and discharging. The positive electrode material contains between 5% by mass or more and 30% by mass or less of a carbon black composite formed by joining together fibrous carbon and carbon black wherein ash is 1.0% or less by mass in accordance with JIS K 1469and the remainder includes olivine-type lithium iron phosphate, and volatile oxygen-containing functional groups which constitutes 1.0% or less by mass of the positive electrode material. The fibrous carbon is preferably a nanotube having a fiber diameter of 5nm or more and 50nm or less and a specific surface area between 50m 2 /g or more and 400m 2 /g or less. |
申请公布号 |
KR20120093874(A) |
申请公布日期 |
2012.08.23 |
申请号 |
KR20127009302 |
申请日期 |
2010.10.19 |
申请人 |
DENKI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
KAWASAKI TAKASHI;SAKASHITA HIROSHI;SAWAI TAKEHIKO;SAITO SHINJI |
分类号 |
H01M4/136;H01M4/1397;H01M4/58;H01M4/62 |
主分类号 |
H01M4/136 |
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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