发明授权
- 专利标题： Method for producing difluorophosphate, nonaqueous electrolyte solution for secondary batteries, and nonaqueous electrolyte secondary battery
- 专利标题（中）： 二氟磷酸盐的制造方法，二次电池用非水电解液和非水电解质二次电池
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申请号： US13053874申请日： 2011-03-22
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公开(公告)号： US08137848B2公开(公告)日： 2012-03-20
- 发明人: Ryoichi Kato , Hitoshi Suzuki
- 申请人： Ryoichi Kato , Hitoshi Suzuki
- 申请人地址： JP Tokyo
- 专利权人： Mitsubishi Chemical Corporation
- 当前专利权人： Mitsubishi Chemical Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P
- 优先权： JP2004-304487 20041019
- 主分类号： H01M6/14
- IPC分类号： H01M6/14 ; H01M6/16
摘要：
The present invention provides a simple method for producing a difluorophosphate from a source material, the difluorophosphate being useful as additives for nonaqueous electrolyte solutions for secondary batteries. In the method, a source material containing a carbonate and/or a borate is allowed to react with a source gas which contains P and F and which may further contain O as required. The source material may contain lithium carbonate. The source gas may be produced by decomposing LiPF6. The source gas may be produced in such a manner that LiPF6 and lithium carbonate are mixed and then subjected to reaction. The nonaqueous electrolyte solution contains the product obtained from the reaction.
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