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Mussel-inspired polydopamine-treated composite electrolytes for long-term operations of polymer electrolyte membrane fuel cells

Cited 15 time in Web of Science Cited 16 time in Scopus
Authors
Oh, Keun-Hwan; Choo, Min-Ju; Lee, Hongkyung; Park, Kwang Hyun; Park, Jung-Ki; Choi, Jang Wook
Issue Date
2013-12
Citation
Journal of Materials Chemistry A, Vol.1 No.46, pp.14484-14490
Abstract
While composite proton-conductive membranes have been demonstrated to enhance the durability of polymer electrolyte membrane fuel cells (PEMFCs), preservation of homogeneous interfaces between inner components has often been a nontrivial challenge for long-term cell operations. Herein, we report mussel-inspired polydopamine as an adhesive mediator between proton-conductive sulfonated poly(ether ether ketone) (sPEEK) and mechanically stable porous polytetrafluoroethylene (PTFE) substrates. The polydopamine coating facilitates a conformal interface between both components with a large surface energy difference and enables such homogeneous membranes for long-term cell operations. The enhanced mechanical stability and stable conformation of the composite membranes were reflected by superior electrochemical performance over repeated wet/dry cycles via suppressed crack/void space formation and edge failure. The present study suggests that the mussel-inspired polymer coating is a useful scheme for various energy devices that need to deal with multiple components with different surface energies.
ISSN
2050-7488
URI
http://hdl.handle.net/10371/164612
DOI
https://doi.org/10.1039/c3ta13166a
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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