发明申请
- 专利标题: METHOD OF MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION BATTERY
- 专利标题(中): 锂离子电池正极活性物质的制备方法
-
申请号: US13923428申请日: 2013-06-21
-
公开(公告)号: US20130283603A1公开(公告)日: 2013-10-31
- 发明人: Takuya MIWA , Kuniharu Nomoto , Nobuhiro Inoue
- 申请人: Semiconductor Energy Laboratory Co., Ltd.
- 优先权: JP2011-186340 20110829
- 主分类号: H01M4/58
- IPC分类号: H01M4/58 ; H01G9/042 ; H01M10/04
摘要:
At least one of an aqueous solution A containing lithium, an aqueous solution B containing iron, manganese, cobalt, or nickel, and an aqueous solution C containing a phosphoric acid includes graphene oxide. The aqueous solution A is dripped into the aqueous solution C, so that a mixed solution E including a precipitate D is prepared. The mixed solution E is dripped into the aqueous solution B, so that a mixed solution G including a precipitate F is prepared. The mixed solution G is subjected to heat treatment in a pressurized atmosphere, so that a mixed solution H is prepared, and the mixed solution H is then filtered. Thus, particles of a compound containing lithium and oxygen which have a small size are obtained.