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公开(公告)号：US11387466B2
公开(公告)日：2022-07-12
申请号：US16629533
申请日：2018-07-03
Applicant: NISSHINBO HOLDINGS INC.
Inventor： Tetsutaro Sato , Yuji Kubota , Takeaki Kishimoto , Kumi Narizuka , Koji Kamata , Yoshikazu Kobayashi
Abstract: 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 fbroad at 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.
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Patent Agency Ranking
公开(公告)号：US20200036013A1
公开(公告)日：2020-01-30
申请号：US16581848
申请日：2019-09-25
Inventor： Yasuo IMASHIRO , Takeaki Kishimoto , Tetsutaro Sato , Jun-ichi Ozaki , Takuya Maie , Sayaka Kusadokoro
IPC: H01M4/90 , H01M8/10 , B01J21/18 , H01M12/08 , B01J37/08 , H01M4/587 , H01M4/583 , H01M4/133 , C01B32/05 , H01M12/06 , H01M8/1004 , H01M8/1018
Abstract: 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 fbroad, fmiddle, and fnarrow obtained by separating a peak in the vicinity of a diffraction angle of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction satisfy the following conditions (a) to (c): (a) fbroad: 75% or more and 96% or less; (b) fmiddle: 3.2% or more and 15% or less; and (c) fnarrow: 0.4% or more and 15% or less.
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公开(公告)号：US11145876B2
公开(公告)日：2021-10-12
申请号：US16629538
申请日：2018-07-03
Applicant: NISSHINBO HOLDINGS INC.
Inventor： Yoshikazu Kobayashi , Yuji Kubota , Tetsutaro Sato , Takeaki Kishimoto
Abstract: A carbon catalyst, a battery electrode, and a battery each having excellent catalytic activity and excellent durability. The carbon catalyst includes iron, exhibits a weight reduction ratio in the temperature range from 200° C. to 1,200° C. of 12.0 wt % or less measured by thermogravimetric analysis in a nitrogen atmosphere, and has a carbon structure that exhibits, in X-ray absorption fine structure analysis of a K absorption edge of the iron, the following (a) and/or (b): (a) a ratio of a normalized absorbance at 7,130 eV to a normalized absorbance at 7,110 eV is 7.0 or more; and (b) a ratio of a normalized absorbance at 7,135 eV to a normalized absorbance at 7,110 eV is 7.0 or more.
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公开(公告)号：US12080896B2
公开(公告)日：2024-09-03
申请号：US17834333
申请日：2022-06-07
Applicant: NISSHINBO HOLDINGS INC.
Inventor： Tetsutaro Sato , Yuji Kubota , Takeaki Kishimoto , Kumi Narizuka , Koji Kamata , Yoshikazu Kobayashi
Abstract: 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 fbroad at 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.
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公开(公告)号：US11344867B2
公开(公告)日：2022-05-31
申请号：US16629544
申请日：2018-07-03
Applicant: NISSHINBO HOLDINGS INC.
Inventor： Yuji Kubota , Takeaki Kishimoto , Kumi Narizuka , Tetsutaro Sato
Abstract: A carbon catalyst has: a carbon structure that exhibits a nitrogen desorption temperature range from 800° C.-1,000° C. of 0.75×10−5 mol/g or more or a nitrogen desorption amount in the range from 600° C. to 1,000° C. of 1.20×10−5 mol/g or more in a temperature programmed desorption method including measuring nitrogen desorption amount temperature range from 600° C.-1,000° 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±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±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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公开(公告)号：US10468688B2
公开(公告)日：2019-11-05
申请号：US15301775
申请日：2015-11-30
Inventor： Yasuo Imashiro , Takeaki Kishimoto , Tetsutaro Sato , Jun-ichi Ozaki , Takuya Maie , Sayaka Kusadokoro
IPC: C01B31/00 , H01M4/90 , B01J37/08 , B01J21/18 , H01M8/10 , H01M12/06 , H01M12/08 , H01M8/1004 , H01M8/1018 , H01M4/133 , H01M4/583 , H01M4/587 , C01B32/05
Abstract: 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 fbroad, fmiddle, and fnarrow obtained by separating a peak in the vicinity of a diffraction angle of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction satisfy the following conditions (a) to (c): (a) fbroad: 75% or more and 96% or less; (b) fmiddle: 3.2% or more and 15% or less; and (c) fnarrow: 0.4% or more and 15% or less.
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