| 摘要 |
Disclosed is an electric double layer capacitor comprising a polarizable electrode containing a carbon material including a microcrystalline carbon similar to graphite, and an electrolyte containing a spiro compound represented by the following general formula (1). (1) (In the above formula, A represents a spiro atom having an sp3 hybrid orbital; Z1 and Z2 independently represent an atomic group forming a saturated or unsaturated ring having 4 or more ring atoms including A; and X- represents a counter anion.) The present invention provides an electric field activation-type electric double layer capacitor wherein the volumetric capacitance density, resistance and withstand voltage are improved all together.
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