US 12,469,857 B2
Membrane-electrode assembly, manufacturing method therefor, and fuel cell comprising same
Jung Ho Kim, Seoul (KR)
Assigned to KOLON INDUSTRIES, INC., Seoul (KR)
Appl. No. 17/601,919
Filed by KOLON INDUSTRIES, INC., Seoul (KR)
PCT Filed Jun. 18, 2020, PCT No. PCT/KR2020/007886
§ 371(c)(1), (2) Date Oct. 6, 2021,
PCT Pub. No. WO2021/006498, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 10-2019-0082107 (KR), filed on Jul. 8, 2019; and application No. 10-2019-0148939 (KR), filed on Nov. 19, 2019.
Prior Publication US 2022/0181652 A1, Jun. 9, 2022
Int. Cl. H01M 8/0273 (2016.01); H01M 8/0284 (2016.01); H01M 8/0286 (2016.01); H01M 8/1004 (2016.01); H01M 8/10 (2016.01)
CPC H01M 8/0273 (2013.01) [H01M 8/0284 (2013.01); H01M 8/0286 (2013.01); H01M 8/1004 (2013.01); H01M 2008/1095 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A membrane-electrode assembly comprising:
an electrolyte membrane having a first surface and a second surface opposite to the first surface, the electrolyte membrane comprising an active area and a non-active area surrounding the active area;
a first electrode disposed over the first surface of the electrolyte membrane, the first electrode covering the active area;
a first sub-gasket disposed over the first surface of the electrolyte membrane, the first sub-gasket having a first window to expose a central part of the first electrode, the first sub-gasket having a first sub-gasket surface facing the electrolyte membrane and a first opposite surface, wherein the first sub-gasket is formed by directly coating a first liquid material over the first surface of the electrolyte membrane such that at least a portion of the first sub-gasket is in direct contact with the first surface of the electrolyte membrane;
a second electrode disposed over the second surface of the electrolyte membrane, the second electrode covering the active area; and
a second sub-gasket disposed over the second surface of the electrolyte membrane, the second sub-gasket having a second window to expose a central part of the second electrode, the second sub-gasket having a second sub-gasket surface facing the electrolyte membrane and a second opposite surface, wherein the second et is formed by directly coating a second liquid material over the second surface of the electrolyte membrane such that at least a portion of the second sub-gasket is in direct contact with the second surface of the electrolyte membrane,
wherein,
the first sub-gasket comprises a first overlap area overlapping an edge of the first electrode and a first non-overlap area covering the non-active area,
there is no step between the first overlap area and the first non-overlap area on the first opposite surface of the first sub-gasket,
the second sub-gasket comprises a second overlap area overlapping an edge of the second electrode and a second non-overlap area covering the non-active area, and
there is no step between the second overlap area and the second non-overlap area on the second opposite surface of the second sub-gasket.