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AssigneesNational University Corporation Gunma University, National University Corporation Hokkaido University, Nisshinbo Holdings Inc.
InventorsChihiro Fujii, Yasuhiro Oshima, Takeaki Kishimoto, Rieko Kobayashi, Akiko Taira, Jun-ichi Ozaki, Haruo Kumagai
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Provided is a hydrogen-storing carbon material with improved hydrogen storage capacity. The hydrogen-storing carbon material has a total pore volume of 0.5 cm3/g or more, and a ratio of a total mesoporous volume to a total microporous volume per unit weight of 5 or more. In addition, the hydrogen-storing carbon material may have a nitrogen content of 0.5 wt % or more and less than 20 wt %. In addition, the hydrogen-storing carbon material may have a stable potential of −1.28 V or more when a cathode current with respect to the hydrogen-storing carbon material is held at 1,000 mA/g in electrochemical measurement by chronopotentiometry involving using the hydrogen-storing carbon material in a working electrode in a three-electrode method.
A hydrogen-storing carbon material, which has a total pore volume of 0.5 cm3/g or more, and a ratio of a total mesoporous volume to a total microporous volume per unit weight of 5 or more, wherein the hydrogen-storing carbon material has a nitrogen content of 0.5 wt % or more and less than 20 wt %.
Dependencies are inferred from the claim text.