基本信息:
- 专利标题： Nonaqueous-electrolyte secondary battery
- 专利标题（中）：非水电解质二次电池
- 申请号：US11453006 申请日：2006-06-15
- 公开(公告)号：US20070048607A1 公开(公告)日：2007-03-01
- 发明人： Satoshi Nakashima , Yasushi Usami , Akihiko Sakai , Manabu Hayashi , Ryoichi Kato
- 申请人： Satoshi Nakashima , Yasushi Usami , Akihiko Sakai , Manabu Hayashi , Ryoichi Kato
- 申请人地址： JP Tokyo JP Tokyo
- 专利权人： MITSUBISHI CHEMICAL CORPORATION,Mitsubishi Plastics, Inc.
- 当前专利权人： MITSUBISHI CHEMICAL CORPORATION,Mitsubishi Plastics, Inc.
- 当前专利权人地址： JP Tokyo JP Tokyo
- 优先权： JPP.2003-416761 20031215; JPP.2003-416762 20031215; JPP.2004-033617 20040210; JPP.2004-033618 20040210; JPP.2004-033619 20040210
- 主分类号： H01M4/02
- IPC分类号： H01M4/02 ; H01M2/16 ; H01M4/58 ; H01M10/40
摘要：
A subject for the invention is to improve the cycle characteristics of a high-capacity secondary battery containing an active material packed at a high density, by using a particulate active material having a low aspect ratio. The invention relates to a nonaqueous-electrolyte secondary battery comprising a negative electrode and a positive electrode each capable of occluding/releasing lithium, a separator, and a nonaqueous electrolyte solution comprising a nonaqueous solvent and a lithium salt, characterized in that the separator comprises a porous film made of a thermoplastic resin containing an inorganic filler, and at least either of the following is satisfied: the active material contained in the negative electrode is a particulate active material having an aspect ratio of from 1.02 to 3; and the active material contained in the positive electrode is a particulate active material having an aspect ratio of from 1.02 to 2.2.
摘要（中）：
本发明的主题是通过使用具有低纵横比的颗粒状活性材料来改善含有以高密度填充的活性物质的高容量二次电池的循环特性。 本发明涉及一种非水电解质二次电池，其包含负极和正极，各自能够吸留/释放锂，隔膜和非水电解质溶液，其包含非水溶剂和锂盐，其特征在于，所述隔膜包括 由含有无机填料的热塑性树脂制成的多孔膜，满足以下要素中的至少一种：负极中所含的活性物质是纵横比为1.02〜3的粒状活性物质， 正极中含有的活性物质是长径比为1.02〜2.2的粒状活性物质。
公开/授权文献:
- US08137846B2 Nonaqueous-electrolyte secondary battery 公开/授权日：2012-03-20
IPC结构图谱:
| H | 电学 |
| --H01 | 基本电气元件 |
| ----H01M | 用于直接转变化学能为电能的方法或装置，例如电池组 |
| ------H01M4/00 | 电极 |
| --------H01M4/02 | .由活性材料组成或包括活性材料的电极 |