Nisshinbo Holdings Inc.

Gunma University

Hokkaido University

Other

Jun-ichi Ozaki

Takeaki Kishimoto

Yasuo Imashiro

Rieko Kobayashi

Takuya Maie

Takafumi Ishii

Tetsutaro Sato

Chihiro Fujii

Naokatsu Kannari

Haruo Kumagai

Sayaka Kusadokoro

Yuka Koshigoe

Kyosuke Iida

Mikiko Imada

Kazuo Saito

Seizo Miyata

Naoto Saito

Yoshikazu Kobayashi

Yuji Kubota

Masaharu Oshima

Naokazu Sasaki

Shogo Moriya

Erina Matsuzaka

Mayumi Mizushiri

Asao Oya

Akiko Taira

Noriko Osuga

Katsuyuki Matsubayashi

Rieko Kameyama

Yasuhiro Oshima

Hiroki Takahashi

Takuya Takahashi

Hirotaka Kujirai

Setsura Kobayashi

Yusuke Sudo

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 has improved catalytic activity, and an electrode and a battery include the carbon catalyst. A carbon catalyst includes a metal and phosphorus atoms, wherein a ratio of a concentration (atomic %) of the phosphorus atoms exhibiting a peak having a peak top within a range of 132.5&#xb1;0.3 eV and having a full width at half maximum of 2.0&#xb1;0.5 eV, which is obtained by peak separation of a phosphorus atom P2p peak, with respect to a concentration (atomic %) of carbon atoms in X-ray photoelectron spectroscopic measurement is 0.0005 or more.

Carbon catalyst, and electrode and battery containing same

A carbon material that is compact and exhibits an excellent hydrogen storage capacity. A carbon material has a specific surface area of 200 m/g or less and exhibits a hydrogen storage capacity of 1.5&#xd7;10g/mor more at a hydrogen pressure of 10 MPa.

Carbon material, and method relating to same

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

Provided are a support for supporting a metal, a metal-supported catalyst, a methanation reaction apparatus, and a method relating thereto that realize effective methanation of carbon monoxide. The support for supporting a metal includes a carbonized material obtained by carbonizing raw materials containing an organic substance and a metal, in which the support is used for supporting a metal that exhibits a catalytic activity for a methanation reaction of carbon monoxide. The metal-supported catalyst includes: a support formed of a carbonized material obtained by carbonizing raw materials containing an organic substance and a metal; and a metal that exhibits a catalytic activity for a methanation reaction of carbon monoxide, the metal being supported on the support.

Support for supporting metals, metal-supported catalyst, methanation reaction apparatus, and method relating to these

Provided are a carbon catalyst having an excellent activity and a method of manufacturing a carbon catalyst, and an electrode and a battery each using the carbon catalyst. The method of manufacturing a carbon catalyst according to the present invention includes a carbonizing step S, the step involving heating a raw material containing a thermoplastic resin, a metal, and a conductive carbon material to coat the surface of the conductive carbon material with the molten thermoplastic resin and to carbonize the thermoplastic resin on the surface of the conductive carbon material so that the carbon catalyst is obtained.

Carbon catalyst, method for manufacturing the carbon catalyst, and electrode and battery using the carbon catalyst

A method of manufacturing a carbon catalyst according to the present invention includes: a first step Sinvolving heating a raw material containing a resin and a metal to carbonize the resin so that a carbon catalyst is obtained; a second step Sinvolving subjecting the carbon catalyst to a treatment for removing the metal; and a third step Sinvolving subjecting the carbon catalyst that has been subjected to the treatment to a heat treatment to improve an activity of the carbon catalyst.

An electrode for use in a fuel cell comprises a flexible carbon-fiber nonwoven fabric and a fuel cell catalyst, such as a metal catalyst or a carbon alloy catalyst, supported on the surfaces of the carbon fibers constituting the flexible carbon-fiber nonwoven fabric. The flexible carbon-fiber nonwoven fabric is formed by carbonizing a nonwoven fabric obtained by electrospinning a composition containing: an electrospinnable macromolecular substance; an organic compound that is different from the macromolecular substance; and a transition metal. This structure allows the provision of an electrode, for use in a fuel cell, which uses a flexible carbon-fiber nonwoven fabric as a substrate and combines the functions of a gas-diffusion layer and an electrocatalyst layer.

Electrode for use in a fuel cell functioning as a gas diffusion layer and an electrocatalyst layer

A carbon catalyst which has high catalytic activity and can achieve high catalyst performance is provided. The carbon catalyst comprises nitrogen. The energy peak area ratio of the first nitrogen atom whose electron in the 1s orbital has a binding energy of 398.5&#xb1;1.0 eV to the second nitrogen atom whose electron in the 1s orbital has a binding energy of 401&#xb1;1.0 eV (i.e., the value of (the first nitrogen atom)/(the second nitrogen atom)) of the nitrogen introduced into the catalyst is 1.2 or less.

Carbon catalyst, method for producing carbon catalyst, fuel cell, electricity storage device, and use of carbon catalyst

A method of manufacturing a carbon catalyst according to the present invention includes: a first step involving heating a raw material containing a resin and a metal to carbonize the resin so that a carbon catalyst is obtained; a second step involving subjecting the carbon catalyst to a treatment for removing the metal; and a third step involving subjecting the carbon catalyst that has been subjected to the treatment to a heat treatment to improve an activity of the carbon catalyst.

Provided are a carbon catalyst for hydrogen production having an excellent catalytic activity, a production method therefor, and a method of producing hydrogen using the catalyst. The carbon catalyst for hydrogen production is a carbon catalyst, which is obtained by carbonizing a raw material including an organic substance and a transition metal, the catalyst being used for hydrogen production by thermal decomposition of a hydrocarbon compound and/or an oxygen-containing organic compound. Further, the carbon catalyst for hydrogen production may be obtained by loading an alkaline earth metal on a carbonized material produced by the carbonization.

Carbon catalyst for hydrogen production, method for producing catalyst, and method for producing hydrogen using catalyst

Provided is a method of producing a carbon catalyst having an improved activity. The method of producing carbon catalyst including a carbonization step of carbonizing raw materials containing an organic compound as a carbon source, a metal, and an electrically conductive carbon material to produce a carbonized material; a metal impregnation step of impregnating the carbonized material with a metal; and a heat treatment step of subjecting the carbonized material impregnated with the metal to a heat treatment.

Carbon catalyst, method of producing same, and electrode and battery each utilizing same

Provided is a carbon catalyst having an improved catalytic activity, a production method therefor, and an electrode and a battery which use the carbon catalyst. The carbon catalyst is obtained by carbonizing a raw material including an organic substance containing a nitrogen atom and metals, and includes iron and/or cobalt, and copper as the metals. Further, the carbon catalyst has a crystallinity of 41.0% or less, which is determined by X-ray diffractometry, a nitrogen atom-to-carbon atom ratio of 0.7 or more, which is determined by X-ray photoelectronic spectrometry, and an oxygen reduction-starting potential of 0.774 V (vs. NHE) or more.

Growing community of inventors

Kiryu, Japan

Jun-ichi Ozaki