ELECTRODE STABILIZER FOR NONAQUEOUS ELECTROLYTE ELECTRIC DOUBLE LAYER CAPACITOR, NONAQUEOUS ELECTROLYTE SOLUTION FOR ELECTRIC DOUBLE LAYER CAPACITOR AND NONAQUEOUS ELECTROLYTE ELECTRIC DOUBLE LAYER CAPACITOR

摘要

Disclosed is an electrode stabilizer for nonaqueous electrolyte electric double layer capacitors which enables to reduce leakage current value of an electric double layer capacitor. Specifically disclosed is an electrode stabilizer for nonaqueous electrolyte electric double layer capacitors which is composed of a phosphazene compound with a molecular structure having a group containing a double bond other than phosphorus-nitrogen double bond.