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公开(公告)号：US10431823B2
公开(公告)日：2019-10-01
申请号：US15310161
申请日：2015-07-30
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Hiroaki Kumakura , Shujun Ye , Akira Hasegawa , Yoshimi Kubo , Eiki Yasukawa , Akihiro Nomura
IPC: H01M4/58 , B01J23/50 , C01B35/04 , H01B12/04 , H01B13/00 , H01M4/48 , B01J35/00 , B01J35/02 , H01M4/36 , H01M4/485 , H01M4/62 , H01M10/0525 , B01J37/08 , B01J21/18 , H01M4/131 , H01M4/136 , H01M4/1391 , H01M4/1397 , H01M10/052 , C01B32/05 , H01M4/02
Abstract: Provided is a method for manufacturing a base material powder having a carbon nanocoating layer, the method including adding a polycyclic aromatic hydrocarbon to a base material powder, heating the mixture to a temperature that is higher than or equal to the boiling point of the polycyclic aromatic hydrocarbon and is lower than or equal to the relevant boiling point temperature+300° C., and that is higher than or equal to the thermal decomposition temperature of the polycyclic aromatic hydrocarbon, and thereby coating the surface of the base material powder with a layer of carbon having a thickness of 0.1 nm to 10 nm. According to the method, when a source of carbon that covers a base material powder is appropriately selected, the base material powder having the carbon nanocoating layer can be provided, which does not have a possibility of causing inconveniences in the applications of a final manufactured product of the base material powder and exhibits satisfactory productivity of the base material powder, and from which a modified final manufactured product is obtained.
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公开(公告)号：US12272826B2
公开(公告)日：2025-04-08
申请号：US17611984
申请日：2020-05-21
Applicant: National Institute for Materials Science
Inventor： Eiki Yasukawa , Takashi Kameda , Shoichi Matsuda , Shoji Yamaguchi , Shin Kimura , Kimihiko Ito , Yoshimi Kubo
Abstract: The present invention addresses the problem of providing: a porous carbon structure that has a high micropore volume and can be self-contained; a manufacturing method therefor; a positive electrode material using the same; and a battery (particularly an air battery) using the same. The present invention is a porous carbon structure that is for a positive electrode for an air battery and has voids and a skeleton formed by incorporating carbon, the porous carbon structure satisfying all of the following conditions (a) to (d). (a) The t-plot external specific surface area is within the range of 300 m2/g to 1600 m2/g; (b) the total volume of micropores having a diameter of 1 nm to 200 nm is within the range of 1.2 cm3/g to 7.0 cm3/g; (c) the total volume of micropores having a diameter of 1 nm to 1000 nm is within the range of 2.3 cm3/g to 10.0 cm3/g; and (d) the overall porosity is within the range of 80% to 99%.
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公开(公告)号：US20220255085A1
公开(公告)日：2022-08-11
申请号：US17611984
申请日：2020-05-21
Applicant: National Institute for Materials Science
Inventor： Eiki Yasukawa , Takashi Kameda , Shoichi Matsuda , Shoji Yamaguchi , Shin Kimura , Kimihiko Ito , Yoshimi Kubo
Abstract: The present invention addresses the problem of providing: a porous carbon structure that has a high micropore volume and can be self-contained; a manufacturing method therefor; a positive electrode material using the same; and a battery (particularly an air battery) using the same. The present invention is a porous carbon structure that is for a positive electrode for an air battery and has voids and a skeleton formed by incorporating carbon, the porous carbon structure satisfying all of the following conditions (a) to (d). (a) The t-plot external specific surface area is within the range of 300m2/g to 1600m2/g; (b) the total volume of micropores having a diameter of lnm to 200 nm is within the range of 1.2 cm3/g to 7.0cm3/g; (c) the total volume of micropores having a diameter of lnm to 1000 nm is within the range of 2.3cm3/g to 10.0 cm3/g; and (d) the overall porosity is within the range of 80% to 99%.
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