Interlocking Membrane/Catalyst Layer Interface for High Mechanical Robustness of Hydrocarbon‐Membrane‐Based Polymer Electrolyte Membrane Fuel Cells. Issue 17 (27th March 2015)

• Record Type: Journal Article
• Authors: Oh, Keun‐Hwan; Kang, Hong Suk; Choo, Min‐Ju; Jang, Duk‐Hun; Lee, Dongyoung; Lee, Dai Gil; Kim, Tae‐Ho; Hong, Young Taik; Park, Jung‐Ki; Kim, Hee‐Tak
• Is Part Of: Advanced materials. Volume 29:Issue 17(2017)
• Page Start: 2974
• Page End: 2980
• Publication Date: 2015-03-27
• Subjects: hydrocarbon‐based membranes -- interfacial bonding -- interlocking interfaces -- micropillar patterns -- polymer‐electrolyte‐membrane fuel cells; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201500328
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : 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 bonding strength at RH 50% and a 4.7‐times increase of the wet/dry cycling durability.