Three-dimensionally arrayed and mutually connected 1.2-nm nanopores for high-performance electric double layer capacitor |
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Authors: | Itoi Hiroyuki Nishihara Hirotomo Kogure Taichi Kyotani Takashi |
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Affiliation: | Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan. |
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Abstract: | Zeolite-templated carbon is a promising candidate as an electrode material for constructing an electric double layer capacitor with both high-power and high-energy densities, due to its three-dimensionally arrayed and mutually connected 1.2-nm nanopores. This carbon exhibits both very high gravimetric (140-190 F g(-1)) and volumetric (75-83 F cm(-3)) capacitances in an organic electrolyte solution. Moreover, such a high capacitance can be well retained even at a very high current up to 20 A g(-1). This extraordinary high performance is attributed to the unique pore structure. |
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