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Title:
CARBON SHEET AS WELL AS GAS DIFFUSION ELECTRODE SUBSTRATE, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/190160
Kind Code:
A1
Abstract:
This carbon sheet includes at least a carbon fiber structure formed from carbon fibers, a binding agent, and graphite particles, wherein in a pore diameter distribution of the carbon sheet, the ratio of the volume of a second peak present in a region having a pore diameter of 0.5 µm to 3 µm to the volume of a first peak present in a region having a pore diameter of 20 µm to 100 µm is 0.06 to 0.50.　A carbon sheet which suppresses dry-up and achieves both conductivity and retention of moisture is provided in order to exhibit high power generation performance in a solid polymer fuel cell.

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Inventors:
OTAKE HIROAKI (JP)
UTSUNOMIYA MASAMICHI (JP)
WATANABE FUMITAKA (JP)
SODE KATSUYA (JP)
Application Number:
PCT/JP2023/011823
Publication Date:
October 05, 2023
Filing Date:
March 24, 2023
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
H01M4/96; C04B35/52; C04B35/83; D01F9/22; H01M4/88; H01M8/00; H01M8/10
Domestic Patent References:
WO2022210069A12022-10-06
Foreign References:
JP2017224606A2017-12-21
JP2004311431A2004-11-04
JP2021002444A2021-01-07
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