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Summary:PROBLEM TO BE SOLVED: To provide an electrochemical capacitor.SOLUTION: An electrochemical capacitor includes: a positive electrode using an electrode active material containing 60 to 80% of mesopores of 2 to 50 nm therein; a negative electrode using the electrode active material containing 60 to 80% of micropores less than 2 nm.
Bibliography:Application Number: JP20130254826