发明申请
- 专利标题: ELECTRODE MATERIAL AND METHOD FOR PRODUCING THE SAME
- 专利标题(中): 电极材料及其制造方法
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申请号: US13993403申请日: 2011-11-28
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公开(公告)号: US20130260245A1公开(公告)日: 2013-10-03
- 发明人: Takao Kitagawa , Hirofumi Yasumiishi , Masaru Uehara
- 申请人: Takao Kitagawa , Hirofumi Yasumiishi , Masaru Uehara
- 申请人地址: JP Chiyoda-ku, Tokyo
- 专利权人: SUMITOMO OSAKA CEMENT CO., LTD.
- 当前专利权人: SUMITOMO OSAKA CEMENT CO., LTD.
- 当前专利权人地址: JP Chiyoda-ku, Tokyo
- 优先权: JP2010282353 20101217; JP2011207833 20110922
- 国际申请: PCT/JP2011/077394 WO 20111128
- 主分类号: H01M4/133
- IPC分类号: H01M4/133
摘要:
The present invention provides an electrode material in which unevenness in a supporting amount of a carbonaceous film is less when using an electrode-active material having a carbonaceous film on a surface thereof as the electrode material, and which is capable of improving conductivity, and a method for producing the electrode material. The electrode material includes an aggregate formed by aggregating an electrode-active material in which a carbonaceous film is formed on a surface. In the electrode material, an average particle size of the aggregate is 0.5 to 100 μm, a volume density of the aggregate is 50 to 80 vol % of a volume density in a case in which the aggregate is a solid, and 80% or more of the surface of the electrode-active material is covered with the carbonaceous film. Alternatively, the electrode material includes an aggregate formed by aggregating electrode-active material particles in which a carbonaceous film is formed on a surface. In the electrode material, an average particle size of the aggregate is 0.5 to 100 μm, a pore size (D50) when an accumulated volume percentage of a pore size distribution of the aggregate is 50% is 0.1 to 0.2 μm, and porosity of the aggregate is 15 to 50 vol % with respect to a volume in a case in which the aggregate is a solid.