发明授权
- 专利标题: Lithium secondary battery, and process for producing the same
- 专利标题(中): 锂二次电池及其制造方法
-
申请号: US09482644申请日: 2000-01-13
-
公开(公告)号: US06524749B1公开(公告)日: 2003-02-25
- 发明人: Junya Kaneda , Noriyuki Watanabe , Yasuhisa Aono , Seiji Takeuchi , Yasushi Muranaka , Kouichi Takei
- 申请人: Junya Kaneda , Noriyuki Watanabe , Yasuhisa Aono , Seiji Takeuchi , Yasushi Muranaka , Kouichi Takei
- 优先权: JP11-007380 19990114
- 主分类号: H01M428
- IPC分类号: H01M428
摘要:
A lithium secondary battery, which comprises a positive electrode, a negative electrode containing a lithium ion-storable/dischargeable negative electrode-active material and a lithium ion conductive, non-aqueous electrolytic solution or polymer electrolyte can have distinguished charging/discharging characteristics and a higher safety, when the negative electrode material contains particles comprising carbonaceous materials and at least one of elements capable of forming a compound with Li; the elements have a melting point of at least 900° C. and a thermal expansion coefficient of not more than 9 ppm/K at room temperature; the particles are embedded in a plurality of layers of the carbonaceous materials; the particles being subjected to a mechanical treatment to make particle sizes of the particles smaller than the initial particle size in advance.