发明名称 NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
摘要 A nonaqueous electrolyte secondary battery having an enhanced capacity and a long charge/discharge cycle life is disclosed. The nonaqueous electrolyte secondary battery comprises a positive electrode housed in a case and containing a chalcogen compound as an active material, a negativs electrode arranged in the case such that a separator is sandwiched between the positive and negative electrodes and containing a carbonaceous material as an active material that absorbs and dischargss lithium ions and a nonaqueous electrolyte contained in the case and prepared by dissolving 0.5 mol/? to 1.5 mol/? of electrolytic salt selected from the group consisting of LiPF6, LiBF4, LiAsF6 and LiCF3SO3 in a solvent mixture comprising at least one first nonaqueous solvent selected from the group consisting of noncyclic carbonate, cyclic carbonate, .gamma.-butylolactone and acetonitrile and at least one second nonaqueous solvent containing selected from the group consisting of 1,2-diethoxyethane, 1,2-dimethoxyethane, 1,2-ethoxymethoxyethane, 1,3-dimethoxypropane, diethylether and tetrahydrofurane, the amount of the second nonaqueous solvent in the solvent mixture being so determined that the mol ratio (¢S!/¢Li!) of the second nonaqueous solvent ¢S! to lithium ions ¢Li! is 0.5 to 3.
申请公布号 CA2052317(C) 申请公布日期 1995.09.26
申请号 CA19912052317 申请日期 1991.09.26
申请人 KABUSHIKI KAISHA TOSHIBA;TOSHIBA BATTERY CO., LTD. 发明人 TAKAMI, NORIO;OHSAKI, TAKAHISA;KURISU, NORIHITO;INADA, KUNIAKI
分类号 H01M4/131;H01M4/133;H01M4/52;H01M4/525;H01M4/58;H01M4/587;H01M10/0525;H01M10/0568;H01M10/0569;H01M10/36 主分类号 H01M4/131
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