Invention Grant
US09593016B2 Method for producing difluorophosphate, non-aqueous electrolyte for secondary cell and non-aqueous electrolyte secondary cell
有权
二氟磷酸盐的制造方法，二次电池用非水电解质和非水电解质二次电池
- Patent Title: Method for producing difluorophosphate, non-aqueous electrolyte for secondary cell and non-aqueous electrolyte secondary cell
- Patent Title (中): 二氟磷酸盐的制造方法，二次电池用非水电解质和非水电解质二次电池
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Application No.: US13344742Application Date: 2012-01-06
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Publication No.: US09593016B2Publication Date: 2017-03-14
- Inventor: Ryoichi Kato , Hirofumi Suzuki , Jun Sasahara , Hitoshi Suzuki
- Applicant: Ryoichi Kato , Hirofumi Suzuki , Jun Sasahara , Hitoshi Suzuki
- Applicant Address: JP Tokyo
- Assignee: MITSUBISHI CHEMICAL CORPORATION
- Current Assignee: MITSUBISHI CHEMICAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2005-178828 20050620
- Main IPC: H01M10/0525
- IPC: H01M10/0525 ; H01M10/0567 ; H01M10/0568 ; H01M10/0569 ; C01B25/10 ; C01B25/455
Abstract:
A difluorophosphate effective as an additive for a nonaqueous electrolyte for secondary battery is produced by a simple method from inexpensive common materials.The difluorophosphate is produced by reacting lithium hexafluorophosphate with a carbonate in a nonaqueous solvent. The liquid reaction mixture resulting from this reaction is supplied for providing the difluorophosphate in a nonaqueous electrolyte comprising a nonaqueous solvent which contains at least a hexafluorophosphate as an electrolyte lithium salt and further contains a difluorophosphate. Also provided is a nonaqueous-electrolyte secondary battery employing this nonaqueous electrolyte.
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