发明名称 |
Processes for producing coke, graphite and carbon material for negative electrode of non-aqueous solvent type secondary battery |
摘要 |
<p>When a pitch composition prepared by mixing 100 parts by weight of mesophase pitch with 10 to 1,000 parts by weight of coal tar pitch, is heat-treated at a temperature of 500 DEG C or higher, it is possible to produce a high-density coke at a high yield while avoiding the foaming of the mesophase pitch. In addition, when the coke is graphitized at a temperature of 2,000 DEG C or higher, it is possible to obtain an artificial graphite having a high graphitization degree. Further, when the coke is first pulverized and then graphitized at a temperature of 2,000 DEG C or higher, it is possible to obtain a high-crystallinity graphite powder which can be suitably used as a carbon material for a negative electrode of non-aqueous solvent type secondary battery having a high discharge capacity and a high charge-discharge efficiency.</p> |
申请公布号 |
EP1186646(B1) |
申请公布日期 |
2007.10.17 |
申请号 |
EP20010119188 |
申请日期 |
2001.08.09 |
申请人 |
MITSUBISHI GAS CHEMICAL COMPANY, INC. |
发明人 |
KANNO, KOICHI;TSURUYA, HIROTAKA;FUJIURA, RYUJI |
分类号 |
C01B31/00;C10C3/00;C01B31/02;C01B31/04;C10B55/00;C10B57/04;C10C3/02;H01M4/587;H01M10/05 |
主分类号 |
C01B31/00 |
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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