发明申请
US20080222881A1 Method of producing active material for lithium secondary battery, method of producing electrode for lithium secondary battery, method of producing lithium secondary battery, and method of monitoring quality of active material for lithium secondary battery
有权
锂二次电池用活性物质的制造方法，锂二次电池用电极的制造方法，锂二次电池的制造方法以及锂二次电池的活性物质的监测方法
- 专利标题： Method of producing active material for lithium secondary battery, method of producing electrode for lithium secondary battery, method of producing lithium secondary battery, and method of monitoring quality of active material for lithium secondary battery
- 专利标题（中）： 锂二次电池用活性物质的制造方法，锂二次电池用电极的制造方法，锂二次电池的制造方法以及锂二次电池的活性物质的监测方法
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申请号： US12071880申请日： 2008-02-27
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公开(公告)号： US20080222881A1公开(公告)日： 2008-09-18
- 发明人: Denis Yau Wai Yu , Kazunori Donoue , Toshikazu Yoshida , Tetsuo Kadohata , Tetsuyuki Murata , Shigeki Matsuta
- 申请人： Denis Yau Wai Yu , Kazunori Donoue , Toshikazu Yoshida , Tetsuo Kadohata , Tetsuyuki Murata , Shigeki Matsuta
- 优先权： JP2007-050586 20070228; JP2007-136050 20070522; JP2007-177742 20070705; JP2008-008288 20080117
- 主分类号： H01M10/38
- IPC分类号： H01M10/38 ; C01D15/00 ; C01B25/30 ; G01N23/20 ; G01N33/00 ; G01J3/30 ; H01J49/00 ; C01G49/00
摘要：
A method of producing an active material for a lithium secondary battery, by which impurities causing problems in synthesizing an active material for a lithium secondary battery, including a lithium transition metal oxyanion compound are removed efficiently and enhancement of an energy density is realized, is provided. By cleaning the active material for a lithium secondary battery, including a lithium transition metal oxyanion compound, with a pH buffer solution, for example, it is possible to efficiently remove just only impurities such as Li3PO4 or Li2CO3, or a substance, other than LiFePO4, in which the valence of Fe is bivalent such as FeSO4, FeO or Fe3(PO4)2 without dissolving Fe of LiFePO4.
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