| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric double layer capacitor that is usable at 85°C. SOLUTION: The electric double layer capacitor uses an electrolyte containingγ-butyrolactone as a main solvent, and includes a sealing member for sealing an opening. Since a safety valve made of ethylene propylene terpolymer is fitted to a transparent hole bored in the sealing member, there is no deterioration in characteristics due to resolution of the solvent even in its use at 85°C and deterioration due to moisture is suppressed possibly because of suppression of immersion of moisture from the safety valve, thereby providing the electric double layer capacitor having excellent characteristics in its use at 85°C. COPYRIGHT: (C)2010,JPO&INPIT
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