发明名称 |
MANUFACTURING METHOD FOR POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING IT |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a positive electrode active material capable of achieving a nonaqueous electrolyte secondary battery which has a small average particle diameter of particles and properties of high output and battery capacity. <P>SOLUTION: This manufacturing method for a positive electrode active material comprises processes of; a first process where a metal hydroxide slurry is obtained from a metal hydroxide made of secondary particles formed by aggregation of fine primary particles diffused in pure water; a second process where a carbon powder of 0.5 to 1.0 mass% of the metal hydroxide in the metal hydroxide slurry is dispersed by a ultrasonic wave in a hot water of 70°C or more to obtain a carbon powder slurry; a third process where the metal hydroxide slurry and the carbon powder slurry are mixed and filtered to obtain a mixture of the metal hydroxide and the carbon powder; a forth process where the mixture is provided with a heat treatment in an inert gas to obtain a mixture powder of the metal hydroxide and the carbon powder; a fifth process where the mixture powder is mixed with a lithium compound and baked in an oxygen atmosphere to obtain a lithium metal composite oxide. <P>COPYRIGHT: (C)2012,JPO&INPIT |
申请公布号 |
JP2011228062(A) |
申请公布日期 |
2011.11.10 |
申请号 |
JP20100095281 |
申请日期 |
2010.04.16 |
申请人 |
SUMITOMO METAL MINING CO LTD |
发明人 |
IMAIZUMI SHIN;KUZUO RYUICHI |
分类号 |
H01M4/525;C01G53/00;H01M4/485;H01M4/505 |
主分类号 |
H01M4/525 |
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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