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Title:
CARBON SUBSTRATE COMPRISING CARBON FIBERS UNIDIRECTIONALLY ALIGNED, AND GAS DIFFUSION LAYER EMPLOYING SAME
Document Type and Number:
WIPO Patent Application WO/2020/116877
Kind Code:
A1
Abstract:
Disclosed are a carbon substrate for a fuel cell gas diffusion layer, a gas diffusion layer comprising same, a gas diffusion layer employing same, a fuel cell electrode, a fuel cell membrane electrode assembly, and a fuel cell, the carbon substrate comprising a sheet-shaped substrate having an upper surface and a lower surface on the opposite side thereof, wherein the sheet-shaped substrate comprises carbon fibers which are unidirectionally extended and arranged and an organic polymer carbide between the carbon fibers, binding the carbon fibers to each other. The carbon substrate comprises carbon fibers, which are aligned in at least any one direction, having been selected from among a machine direction (MD) and a cross-machine direction (CMD), by controlling the alignment of carbon fibers, and thus the carbon substrate is thin but has excellent mechanical strength and, particularly, excellent flexural strength, thereby enabling effective prevention of the penetration of a gas diffusion layer into a metal separator channel, and has excellent gas flow characteristics.

Inventors:
LEE EUN SOOK (KR)
JYOUNG JY YOUNG (KR)
KIM JUN YOUNG (KR)
KANG NA HEE (KR)
KIM DO HUN (KR)
KIM TAE HYUNG (KR)
KIM EUN CHONG (KR)
KIM TAE NYUN (KR)
Application Number:
PCT/KR2019/016843
Publication Date:
June 11, 2020
Filing Date:
December 02, 2019
Export Citation:
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Assignee:
JNTG CO LTD (KR)
International Classes:
H01M8/0234; D01F9/12; H01M4/86; H01M8/0245; H01M8/1004
Foreign References:
JP2015005525A2015-01-08
US20140329163A12014-11-06
JP2015173134A2015-10-01
JP2018026343A2018-02-15
JP2006222024A2006-08-24
JP2011049179A2011-03-10
JP2018144379A2018-09-20
Other References:
See also references of EP 3893303A4
Attorney, Agent or Firm:
Y.P.LEE, MOCK & PARTNERS (KR)
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