发明名称 |
CARBONACEOUS ELECTRODE MATERIAL FOR NON-AQUEOUS SECONDARY BATTERY |
摘要 |
A carbonaceous electrode having improved capacities for doping and dedoping of a cell active substance, such as lithium, and suitable for a non-aqueous solvent secondary battery, is constituted by a carbonaceous material having a true density as measured by a butanol substitution method of at most 1.46 g/cm3, a true density as measured by a helium substitution method of at least 1.7 g/cm3, a hydrogen-to-carbon atomic ratio H/C of at most 0.15 as measured according to elementary analysis, a BET specific surface area of at most 50 m2/g as measured by nitrogen adsorption BET method, and a carbon dioxide adsorption capacity of at least 10 ml/g. The carbonaceous material is advantageously produced by carbonizing an organic material originated from bamboo genera of family Gramineae, particularly genus Pleioblastus or Bambusa, at 1000 - 1400 ~C under a reduced pressure or under a flowing inert gas stream to provide an appropriate porous structure. |
申请公布号 |
CA2285275(A1) |
申请公布日期 |
1998.10.08 |
申请号 |
CA19982285275 |
申请日期 |
1998.04.03 |
申请人 |
KUREHA KAGAKU KOGYO KABUSHIKI KAISHA;SONY CORPORATION |
发明人 |
ISHIKAWA, MINORU;YAMADA, SHINICHIRO;AZUMA, HIDETO;NAGAMINE, MASAYUKI;SONOBE, NAOHIRO;SENOO, TADASHI;OMARU, ATSUO;IMOTO, HIROSHI;MASUKO, JIRO;SEKAI, KOJI |
分类号 |
C01B31/02;H01M4/133;H01M4/1393;H01M4/587;H01M4/96;H01M10/05 |
主分类号 |
C01B31/02 |
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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