公开(公告)号：US20090130566A1

公开(公告)日：2009-05-21

申请号：US12271045

申请日：2008-11-14

申请人： Masato IWANAGA ,  Noriko YAMASHITA ,  Koji ABE ,  Kazuhiro MIYOSHI

发明人： Masato IWANAGA ,  Noriko YAMASHITA ,  Koji ABE ,  Kazuhiro MIYOSHI

IPC分类号： H01M6/16

CPC分类号： H01M10/0567 ,  H01M10/052

摘要： A non-aqueous electrolyte secondary battery has a high initial capacity and excels in cycle characteristics and storage characteristics even when charged until the potential of the positive electrode active material exceeds as high as 4.3V versus lithium. The non-aqueous electrolyte of the secondary battery contains both 1,3-dioxane and a sulfonic acid ester compound.

摘要翻译： 非水电解质二次电池具有高的初始容量，并且即使在充电直到正极活性物质的电位比锂高达4.3V的电位时，其循环特性和存储特性也优异。 二次电池的非水电解质含有1,3-二恶烷和磺酸酯化合物。

公开(公告)号：US20110229751A1

公开(公告)日：2011-09-22

申请号：US13038790

申请日：2011-03-02

申请人： Noriko YAMASHITA ,  Masato IWANAGA

发明人： Noriko YAMASHITA ,  Masato IWANAGA

IPC分类号： H01M2/16

CPC分类号： H01M2/1653 ,  H01M2/166 ,  H01M2/1686 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0025 ,  Y02T10/7011

摘要： A nonaqueous electrolyte secondary battery includes a positive electrode plate, a negative electrode plate, a separator, and a nonaqueous electrolytic solution. The separator is constituted of a polyolefin microporous membrane constituted of two or more layers of stacked film containing polyethylene and polypropylene, one or both of the surface layers has a polypropylene mixture proportion exceeding 50% by mass and contains inorganic particles, and the nonaqueous electrolytic solution contains a dinitrile compound expressed by CN—(CH2)n—CN (where n≧1 and n is an integer). Thus, the nonaqueous electrolyte secondary battery that even when stored at high temperature in a charged state is not prone to positive electrode degradation and has a large post-high temperature storage capacity recovery rate and good cycling characteristics can be provided.

摘要翻译： 非水电解质二次电池包括正极板，负极板，隔板和非水电解液。 隔膜由聚乙烯和聚丙烯的两层以上的叠层膜构成的聚烯烃微多孔膜构成，其中一个或两个表面层的聚丙烯混合比例超过50质量％，含有无机颗粒，非水电解液 含有CN-（CH2）n-CN（其中n≥1且n为整数）表示的二腈化合物。 因此，即使在充电状态的高温下保存的非水电解质二次电池也不容易发生正极劣化，并且具有大的后高温存储容量回收率和良好的循环特性。