The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 14, 2017
Filed:
Jan. 06, 2012
Ryoichi Kato, Inashiki-gun, JP;
Hirofumi Suzuki, Inashiki-gun, JP;
Jun Sasahara, Inashiki-gun, JP;
Hitoshi Suzuki, Inashiki-gun, JP;
Ryoichi Kato, Inashiki-gun, JP;
Hirofumi Suzuki, Inashiki-gun, JP;
Jun Sasahara, Inashiki-gun, JP;
Hitoshi Suzuki, Inashiki-gun, JP;
MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;
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.