发明申请
- 专利标题: Graphite particles and lithium secondary battery using the same as negative electrode
- 专利标题(中): 石墨颗粒和锂二次电池使用与负极相同
-
申请号: US11655880申请日: 2007-01-22
-
公开(公告)号: US20070117016A1公开(公告)日: 2007-05-24
- 发明人: Yoshito Ishii , Tatsuya Nishida , Atsushi Fujita , Kazuo Yamada
- 申请人: Yoshito Ishii , Tatsuya Nishida , Atsushi Fujita , Kazuo Yamada
- 优先权: JP08-209713 19960808; JP08-264265 19961004; JP08-288109 19961030; JP08-323921 19961204; JP08-348405 19961226; JP08-348406 19961226
- 主分类号: H01M4/58
- IPC分类号: H01M4/58 ; H01B1/24 ; C01B31/04
摘要:
A graphite particle obtained by assembling or binding together a plurality of flat-shaped particles so that the planes of orientation are not parallel to one another, or a graphite particle in which aspect ratio is 5 or less or specific surface area is 8 m2/g or less or the size of crystallite in the direction of c-axis of the crystal is 500 Å or more and the size of crystallite in the direction of plane is 1,000 Å or less as measured by X ray broad angle diffraction, or a graphite particle in which pore volume of the pores having a size falling in a range of 102 to 106 Å is 0.4 to 2.0 cc/q per weight of graphite particle or pore volume of the pores having a size falling in a range of 1×102 to 2×104 Å is 0.08 to 0.4 cc/g per weight of graphite particle is suitable for production of negative electrode of lithium secondary battery, and a lithium secondary battery obtained therefrom is excellent in rapid charge-discharge characteristics, cycle characteristics, etc.
公开/授权文献
信息查询