发明名称 |
METHOD FOR PRODUCING NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY |
摘要 |
Provided is a method of producing an anode material for a non-aqueous electrolyte secondary battery having battery characteristics equivalent to those of a conventional product by simpler production steps than those of a conventional method. A thermally-polymerized petroleum based or coal based pitch is cooled to the softening point or below so that the pitch is solidified to obtain a solidified pitch. The solidified pitch is ground to form a fine pitch powder having an average particle size (median size) of 60 µm or smaller. Then, the fine pitch powder is compression molded at a pressure of 20 to 100 MPa or 0.1 to 6 MN/m to form a porous compression molded pitch. The porous compression molded pitch is subjected to infusibilization treatment. |
申请公布号 |
EP2381517(A4) |
申请公布日期 |
2015.08.19 |
申请号 |
EP20100733317 |
申请日期 |
2010.01.12 |
申请人 |
KUREHA CORPORATION |
发明人 |
KOMATSU, HAJIME;HARA, KENJIRO;MIYAHARA, MICHIHISA |
分类号 |
H01M4/587;C04B35/528;C04B35/626;H01M10/0525 |
主分类号 |
H01M4/587 |
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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