The application discloses a kind of for
sodium ion battery perfluorinated
electrolyte and method and application, belong to
sodium ion battery electrolyte technical field.The preparation method of perfluorinated
electrolyte for
sodium ion battery disclosed in the application comprises the following steps:
sodium hexafluorophosphate is dissolved in fluoroethylene
carbonate,
carbonic acid bis (2,2,2-trifluoroethyl) ester and 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl
ether, after stirring, perfluorinated
electrolyte for
sodium ion battery is obtained;The volume ratio of fluoroethylene
carbonate,
carbonic acid bis (2,2,2-trifluoroethyl) ester and 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl
ether is 3:2:1.The electrolyte gives
system high pressure stability and safety, and promotes the formation of dense,
solid and inorganic
solid electrolyte interface film on the positive
electrode surface, solves the
degradation problem of
electrode-electrolyte interface in long-term cycle, and obtains excellent cycle stability.