Producing lithium fluorophosphate, comprises contacting the solid lithium fluoride having a water content of more than 1500 ppm, preferably 5000-15000 ppm with gas containing phosphorus pentafluoride. An independent claim is included for lithium difluoroph...

Provided is a nonaqueous electrolyte for a secondary battery which comprises a nonaqueous solvent containing at least a hexafluorophosphate as an electrolyte lithium salt; a difluorophosphate; and a fluoride salt. Also provided is a nonaqueous-electrolyte ...

Provided is a method for producing phosphorus pentafluoride comprising reacting phosphorus trihalide represented by Formula: PX 3 , wherein X represents F, Cl or Br, with gas-phase molecular halogen and hydrogen fluoride. The method of the present inventio...

An inventive electrolyte material contains a lithium salt comprising the following components (A1) and (B), or contains the following components (A1), (A2) and (B): (A1) a lithium cation; (A2) an organic cation; and (B) a cyanofluorophosphate anion represe...

An object of the present invention is to provide a method of manufacturing phosphorus pentafluoride and hexafluorophosphate, that can suppress the manufacturing cost and also can manufacture high-quality phosphorus pentafluoride from an inexpensive and low...