公开(公告)号：US20070122694A1

公开(公告)日：2007-05-31

申请号：US11598820

申请日：2006-11-14

申请人： Junichi Yamaki ,  Shigeto Okada ,  Kenta Ishida ,  Takayuki Doi

发明人： Junichi Yamaki ,  Shigeto Okada ,  Kenta Ishida ,  Takayuki Doi

IPC分类号： H01M2/16 ,  H01M4/58

CPC分类号： H01M4/13 ,  H01M4/131 ,  H01M4/134 ,  H01M10/0525 ,  H01M2010/4292

摘要： A non-aqueous electrolyte secondary battery including a positive electrode capable of absorbing and desorbing lithium, a negative electrode capable of absorbing and desorbing lithium, a separator, and a non-aqueous electrolyte, wherein the positive electrode includes a positive electrode active material having a redox potential of not less than 4.5 V relative to a lithium electrode, a coating film is formed on a surface of the positive electrode, and the coating film includes inorganic fine particles and a polymer having a methyl methacrylate unit.

摘要翻译： 包括能够吸收和解吸锂的正极的非水电解质二次电池，能够吸收和解吸锂的负极，隔膜和非水电解质，其中所述正电极包括具有 氧化还原电位相对于锂电极不低于4.5V，在正极的表面上形成涂膜，涂膜包括无机细颗粒和具有甲基丙烯酸甲酯单元的聚合物。

公开(公告)号：US20110076558A1

公开(公告)日：2011-03-31

申请号：US12893637

申请日：2010-09-29

申请人： Shinya Miyazaki ,  Takeshi Chiba ,  Kenta Ishida

发明人： Shinya Miyazaki ,  Takeshi Chiba ,  Kenta Ishida

IPC分类号： H01M10/26

CPC分类号： H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0568 ,  H01M10/0569

摘要： The present invention provides a non-aqueous electrolyte secondary cell that has high voltage, high capacity and excellent high-temperature cycle characteristics at a low cost.The non-aqueous electrolyte secondary cell according to the present invention is characterized by that: the positive electrode active material is LiNiaCobMncO2 (wherein, a+b+c=1, 0.3≦a≦0.6, 0.3≦b≦0.6, 0.1≦c≦0.4) containing 0.4 mass % or less of a water-soluble alkali; the non-aqueous electrolyte contains LiPF6 as a main electrolyte salt and 0.01 mass % or more and 0.5 mass % or less of LiBF4; and the non-aqueous electrolyte further contains 1.5 to 5 mass % of vinylene carbonate.

摘要翻译： 本发明以低成本提供了具有高电压，高容量和优异的高温循环特性的非水电解质二次电池。 本发明的非水电解质二次电池的特征在于：正极活性物质为LiNiaCobMncO2（其中，a + b + c = 1，0.3＆amp; nlE; a＆nlE; 0.6,0.3＆nlE; b＆nlE; 0.6,0.1 ＆nlE; c＆nlE; 0.4），含有0.4质量％以下的水溶性碱; 该非水电解质含有作为主要电解质盐的LiPF 6，LiBF 4的0.01质量％以上且0.5质量％以下， 非水电解质还含有1.5〜5质量％的碳酸亚乙烯酯。