发明名称 |
CARBONACEOUS PRECURSOR, CARBONACEOUS ANODE MATERIAL, AND NONAQUEOUS RECHARGEABLE BATTERY |
摘要 |
A carbonaceous material for a negative electrode in which a true density of 1.65 g/cc to 1.85 g/cc, a content of hydrogen with respect to carbon is 0.01 to 0.15 in terms of an atomic ratio, intervals between (002) planes are 3.45 ANGSTROM to 3.55 ANGSTROM , the thickness of crystalline is 12.0 ANGSTROM to 20.0 ANGSTROM , and assuming that an area enclosed by a base line which is a common tangent line connecting minimal values on the two sides of a (002) diffraction line in a scattered X-ray curve and the (002) diffraction line is S1 and that an area enclosed by a scattered X-ray curve having a diffraction angle 2&thetas; of 4 DEG or more and positioned in lower angle portions as compared with the (002) diffraction line and the base line is S0, an area ratio S0/S1 of S0 with respect to S1 is 0.4 to 2.0. The carbonaceous material for a negative electrode is obtained by oxidizing a carbonaceous raw material containing gamma resin in a quantity of 0.5 wt% to 30 wt% to obtain a carbonaceous precursor of an oxidation product containing oxygen with respect to carbon at an atomic ratio of 0.01 to 0.2 and by calcinating the carbonaceous precursor in an inactive atmosphere. <IMAGE> |
申请公布号 |
EP0936685(A1) |
申请公布日期 |
1999.08.18 |
申请号 |
EP19980936673 |
申请日期 |
1998.08.05 |
申请人 |
SONY CORPORATION;MITSUBISHI CHEMICAL CORPORATION |
发明人 |
YAMAHIRA, TAKAYUKI;TAKEUCHI, YOSHIAKI;ISHIHARA, TADASHI;KATO, AKIO;FUSE, TORU;TAKAO, NORITOSHI;HARASAKI, MASAHIKO |
分类号 |
H01M4/583;H01M4/02;H01M4/04;H01M4/1393;H01M4/58;H01M4/587;H01M4/62;H01M10/0525;H01M10/36 |
主分类号 |
H01M4/583 |
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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