Hydrogen storing carbon material

US8475687B2 · kind B2 · utility

Assignees

• NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY · JP
• NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY · JP
• NISSHINBO HOLDINGS INC. · JP

Inventors

• Chihiro Fujii · Chiba, JP
• Yasuhiro Oshima · Yawata, JP
• Takeaki Kishimoto · Funabashi, JP
• Rieko Kobayashi · Sano, JP
• Akiko Taira · Chiba, JP
• Jun-ichi Ozaki · Warabi, JP
• Haruo Kumagai · Sapporo, JP

Key dates

• Filing date: Feb 21, 2011
• Grant date: Jul 2, 2013
• Expiry date: Feb 21, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/32
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

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.