基本信息:
- 专利标题： 蓄电装置用正极活性物质的制造方法
- 专利标题（英）：METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL FOR POWER STORAGE DEVICE
- 申请号：CN201710680924.4 申请日：2011-10-12
- 公开(公告)号：CN107572541A 公开(公告)日：2018-01-12
- 发明人： 山梶正树 , 奈良航司 , 元吉真子
- 申请人： 株式会社半导体能源研究所
- 申请人地址： 日本神奈川县厚木市
- 专利权人： 株式会社半导体能源研究所
- 当前专利权人： 株式会社半导体能源研究所
- 当前专利权人地址： 日本神奈川县厚木市
- 代理机构： 中国专利代理(香港)有限公司
- 代理人： 童春媛; 罗文锋
- 优先权： 2010-232203 2010.10.15 JP
- 主分类号： C01B33/20
- IPC分类号： C01B33/20 ; C01B33/32 ; H01M4/04 ; H01M4/36 ; H01M4/58 ; H01M4/136 ; H01M10/052 ; B29K105/00 ; B29L31/00
In a manufacturing process of a positive electrode active material for a power storage device, which includes a lithium silicate compound represented by a general formula Li2MSiO4, heat treatment is performed at a high temperature on a mixture material, grinding treatment is performed, a carbon-based material is added, and then heat treatment is performed again. Therefore, the reactivity between the substances contained in the mixture material is enhanced, favorable crystallinity can be obtained, and further microparticulation of the grain size of crystal which is grown larger by the high temperature treatment and crystallinity recovery are achieved; and at the same time, carbon can be supported on the surfaces of particles of the crystallized mixture material. Accordingly, a positive electrode active material for a power storage device, in which electron conductivity is improved, can be manufactured.