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公开(公告)号：EP0958626A1
公开(公告)日：1999-11-24
申请号：EP98901102.0
申请日：1998-02-03
发明人： SONOBE, Naohiro , ISHIKAWA, Minoru , MASUKO, Jiro
CPC分类号： C04B35/6267 , C01B32/05 , C04B35/524 , C04B35/528 , C04B35/6268 , C04B2235/422 , C04B2235/48 , C04B2235/5436 , H01M4/133 , H01M4/587 , H01M10/052 , H01M2004/021
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-type secondary battery, is constituted by a carbonaceous material obtained by carbonizing an aromatic condensation polymer formed by condensation of an aromatic compound having a phenolic hydroxy group and an aldehyde. The carbonaceous material is characterized by an atomic ratio H/C between hydrogen atoms and carbon atoms of below 0.1, a carbon dioxide adsorption capacity of at least 10 ml/g, and an X-ray scattering intensity ratio IW/ID of at least 0.25, wherein IW and ID represent scattering intensities as measured in a wet state and a dry state, respectively, at a parameter s = 2.sinυ/μ of 0.5 nm-1, wherein υ denotes a scattering angle and μ denotes a wavelength of X-rays in X-ray small-angle scattering measurement.
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公开(公告)号：EP0972313A1
公开(公告)日：2000-01-19
申请号：EP98911190.1
申请日：1998-04-03
发明人： YAMADA, ShinichiroSony Corporation , IMOTO, HiroshiSony Corporation , AZUMA, HidetoSony Corporation , SENOO, TadashiSony Corporation , SEKAI, KojiSony Corporation , NAGAMINE, MasayukiSony Energytec Inc. , OMARU, AtsuoSony Energytec Inc. , SONOBE, Naohiro , MASUKO, Jiro , ISHIKAWA, Minoru
IPC分类号： H01M4/58
CPC分类号： H01M4/587 , H01M4/133 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/021
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.
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公开(公告)号：EP0958626B1
公开(公告)日：2002-12-04
申请号：EP98901102.8
申请日：1998-02-03
发明人： SONOBE, Naohiro , ISHIKAWA, Minoru , MASUKO, Jiro
IPC分类号： H01M4/58
CPC分类号： C04B35/6267 , C01B32/05 , C04B35/524 , C04B35/528 , C04B35/6268 , C04B2235/422 , C04B2235/48 , C04B2235/5436 , H01M4/133 , H01M4/587 , H01M10/052 , H01M2004/021
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