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OwnerMasashi Otsuki, Shigeki Endo +1inventors
InventorsMasashi Otsuki, Shigeki Endo, Takao Ogino
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The present invention provides an additive for a non-aqueous electrolyte comprising a phosphazene derivative represented by the following formula (1): (PNR2)n formula (1) wherein R represents a fluorine-containing substituent or fluorine, at least one of all R's is a fluorine-containing substituent, and n represents 3 to 14. More particularly, the present invention provides a non-aqueous electrolyte secondary cell and a non-aqueous electrolyte electric double layer capacitor comprising the additive for a non-aqueous electrolyte which exhibit good low temperature characteristics, good resistance to deterioration, and good incombustibility, and accordingly are significantly high in safety.
(amended) An additive for a non-aqueous electrolyte comprising a phosphazene derivative represented by the following formula (1):
(amended) A non-aqueous electrolyte secondary cell comprising:
The cell of claim 10, wherein the non-aqueous electrolyte contains therein LiPF6 as a supporting salt, ethylene carbonate and/or propylene carbonate as aprotic organic solvents, and no less than 5 vol % of a phosphazene derivative.
(amended) A non-aqueous electrolyte electric double layer capacitor comprising:
Dependencies are inferred from the claim text.