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A new solution for enhancing interfacial adhesion between the hydrocarbon (HC) membrane and a perfluorinated catalyst layer (CL) in polymer electrolyte fuel cells (PEMFCs) is successfully demonstrated by J.‐K. Park, H.‐T. Kim, and co‐workers on page 2974. This is realized by the intrusion of micrometer‐sized pillars fabricated on the HC membrane into the perfluorinated CL, forming an interlocking...
A physical interlocking interface that can tightly bind a sulfonated poly(arylene ether sulfone) (SPAES) membrane and a Nafion catalyst layer in polymer electrolyte fuel cells is demonstrated. Owing to higher expansion with hydration for SPAES than for Nafion, a strong normal force is generated at the interface of a SPAES pillar and a Nafion hole, resulting in an 8‐fold increase of the interfacial...
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