Hokkaido University

Gunma University

Nisshinbo Holdings Inc.

Haruo Kumagai

Jun-ichi Ozaki

Rieko Kobayashi

Yasuo Imashiro

Takeaki Kishimoto

Chihiro Fujii

Takuya Maie

Takafumi Ishii

Akiko Taira

Asao Oya

Yasuhiro Oshima

Jun-Ichi Ozaki

A hydrogen storage carbon material having a carbon structure suited for hydrogen storage and a production method thereof. The hydrogen storage carbon material according to this embodiment includes a carbon structure which has a ratio of an ultramicropore volume to a micropore volume of 60% or more, and in which stored hydrogen exhibits, inH-NMR measurement, a second peak at a position corresponding to a chemical shift of from &#x2212;2 ppm to &#x2212;20 ppm with respect to a first peak attributed to gaseous hydrogen.

Hydrogen storage carbon material

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 cm/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 &#x2212;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.

Hydrogen storing carbon material

Growing community of inventors

Sapporo, Japan

Haruo Kumagai