Gunma University

Nisshinbo Holdings Inc.

Hokkaido University

Takuya Maie

Jun-ichi Ozaki

Yasuo Imashiro

Takeaki Kishimoto

Tetsutaro Sato

Takafumi Ishii

Sayaka Kusadokoro

Jun-Ichi Ozaki

Yoshikazu Kobayashi

Yuji Kubota

Rieko Kobayashi

Haruo Kumagai

Asao Oya

Provided are a carbon catalyst, an electrode, and a battery that exhibit excellent activity. A carbon catalyst according to one embodiment of the present invention has a carbon structure in which area ratios of three peaks f, f, and fobtained by separating a peak in the vicinity of a diffraction angle of 26&#xb0; in an X-ray diffraction pattern obtained by powder X-ray diffraction satisfy the following conditions (a) to (c): (a) f: 75% or more and 96% or less; (b) f: 3.2% or more and 15% or less; and (c) f: 0.4% or more and 15% or less.

Carbon catalyst, electrode, and battery

A carbon catalyst, a battery electrode, and a battery, each exhibits excellent catalytic performance. A carbon catalyst contains two kinds of transition metals and has such a carbon structure that an interplanar spacing d, which is determined from a Bragg angle of one of three diffraction peaks f, f, and fobtained by separating a diffraction peak around a diffraction angle (2&#x3b8;) of 26&#xb0; in an X-ray diffraction pattern of powder X-ray diffraction with a CuK&#x3b1; ray, the one diffraction peak being the diffraction peak f, is 0.374 nm or more.

Carbon catalyst, battery electrode, and battery

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

Growing community of inventors

Chiba, Japan

Takuya Maie