US 12,148,963 B2
Membrane-electrode assembly, method for manufacturing same, and fuel cell comprising same
Nak Won Kong, Seoul (KR); Kyoung Sik Nam, Seoul (KR); Kah Young Song, Seoul (KR); Jun Young Kim, Seoul (KR); and Ju Sung Lee, Seoul (KR)
Assigned to KOLON INDUSTRIES, INC., Seoul (KR)
Appl. No. 17/775,268
Filed by KOLON INDUSTRIES, INC., Seoul (KR)
PCT Filed Dec. 23, 2020, PCT No. PCT/KR2020/019004
§ 371(c)(1), (2) Date May 6, 2022,
PCT Pub. No. WO2021/137518, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 10-2019-0179675 (KR), filed on Dec. 31, 2019.
Prior Publication US 2022/0393212 A1, Dec. 8, 2022
Int. Cl. H01M 8/1006 (2016.01); H01M 4/88 (2006.01); H01M 8/10 (2016.01); H01M 8/1018 (2016.01)
CPC H01M 8/1006 (2013.01) [H01M 4/8882 (2013.01); H01M 8/1018 (2013.01); H01M 4/8892 (2013.01); H01M 2008/1095 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A membrane-electrode assembly comprising:
a first electrode;
a second electrode; and
a polymer electrolyte membrane between the first and second electrodes, wherein
the first electrode has a first surface that faces the polymer electrolyte membrane and a second surface opposite the first surface,
the first surface has a first patterned structure,
the second surface has a second patterned structure, and
the first patterned structure has a plurality of projected parts respectively having a circumscribed circle diameter of 10 to 1000 μm at a base plane thereof such that both the first electrode and the polymer electrolyte membrane have increased active areas, whereas the second patterned structure has at least one projected pattern extending in a direction parallel to the second surface and having a width of 10 to 1000 μm and a recessed pattern adjoining the projected pattern such that a non-channel part of a separator to be disposed on the second patterned structure corresponds only to the recessed pattern of the second patterned structure.