Nisshinbo Holdings Inc.

Kumi Narizuka

Takeaki Kishimoto

Yuji Kubota

Tetsutaro Sato

Yoshikazu Kobayashi

Koji Kamata

A carbon catalyst has a carbon structure with a crystallite size Lc falling within 0.90 nm or more and 1.20 nm or less calculated through use of a Bragg angle of a diffraction peak fat a diffraction angle 2θ of 24.0°±4.0° obtained by separating a diffraction peak in the vicinity of a diffraction angle 2θ of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction using a CuKα ray, and a carbon dioxide desorption amount from 650° C. to 1,200° C. of 97 μmol/g or less, a total of a carbon monoxide desorption amount and a carbon dioxide desorption amount from 650° C. to 1,200° C. of 647 μmol/g or less, or a carbon monoxide desorption amount from 650° C. to 1,200° C. of 549 μmol/g or less in a temperature programmed desorption method including measuring a carbon dioxide desorption amount from 25° C. to 1,200° C.

Carbon catalyst, battery electrode, and battery

A carbon catalyst has a carbon structure with a crystallite size Lc falling within 0.90 nm or more and 1.20 nm or less calculated through use of a Bragg angle of a diffraction peak fat a diffraction angle 2&#x3b8; of 24.0&#xb0;&#xb1;4.0&#xb0; obtained by separating a diffraction peak in the vicinity of a diffraction angle 2&#x3b8; of 26&#xb0; in an X-ray diffraction pattern obtained by powder X-ray diffraction using a CuK&#x3b1; ray, and a carbon dioxide desorption amount from 650&#xb0; C. to 1,200&#xb0; C. of 97 &#x3bc;mol/g or less, a total of a carbon monoxide desorption amount and a carbon dioxide desorption amount from 650&#xb0; C. to 1,200&#xb0; C. of 647 &#x3bc;mol/g or less, or a carbon monoxide desorption amount from 650&#xb0; C. to 1,200&#xb0; C. of 549 &#x3bc;mol/g or less in a temperature programmed desorption method including measuring a carbon dioxide desorption amount from 25&#xb0; C. to 1,200&#xb0; C.

A carbon catalyst has: a carbon structure that exhibits a nitrogen desorption temperature range from 800&#xb0; C.-1,000&#xb0; C. of 0.75&#xd7;10mol/g or more or a nitrogen desorption amount in the range from 600&#xb0; C. to 1,000&#xb0; C. of 1.20&#xd7;10mol/g or more in a temperature programmed desorption method including measuring nitrogen desorption amount temperature range from 600&#xb0; C.-1,000&#xb0; C.; a carbon structure exhibits a zeta potential isoelectric point of pH 9.2 or more; or a carbon structure exhibits a ratio of an intensity of a first nitrogen peak within a range of a binding energy of 398.0&#xb1;1.0 eV, to an intensity of a second nitrogen peak having a peak top within a range of a binding energy of 400.5&#xb1;1.0 eV, of 0.620 or more, the first and second nitrogen peaks obtained by separating a peak derived from a 1s orbital of a nitrogen atom in a photoelectron spectrum obtained by X-ray photoelectron spectroscopy.

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Koga, Japan

Kumi Narizuka