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Perfluorosulfonic acid-functionalized Pt/graphene as a high-performance oxygen reduction reaction catalyst for proton exchange membrane fuel cells

Cited 14 time in Web of Science Cited 16 time in Scopus
Authors
Nam, Kwan-Woo; Song, Jongchan; Oh, Keun-Hwan; Choo, Min-Ju; Park, Hyun Ah; Park, Jung-Ki; Choi, Jang Wook
Issue Date
2013-03
Citation
Journal of Solid State Electrochemistry, Vol.17 No.3, pp.767-774
Keywords
Proton exchange membrane fuel cellGraphene sheetPerfluorosulfonic acidOxygen reduction reactionDurability
Abstract
Platinum nanoparticles (Pt NPs) on carbon black (CB) have been used as catalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells for a while. However, this catalyst has suffered from aggregation and dissolution of Pt NPs as well as CB dissolution. In this study, we resolve those issues by developing perfluorosulfonic acid (PFSA)-functionalized Pt/graphene as a high-performance ORR catalyst. The noncovalently bonded PFSA remarkably decreases the dissolution and aggregation of Pt NPs. Moreover, unlike typical NP functionalization with other capping agents, PFSA is a proton conductor and thus efficiently develops a triple-phase boundary. These advantageous features are reflected in the improved cell performance in electrochemical active surface area, catalytic activity, and long-term durability, compared to those of the commercial Pt/C catalysts and graphene-based catalysts with no such treatment.
ISSN
1432-8488
URI
http://hdl.handle.net/10371/164637
DOI
https://doi.org/10.1007/s10008-012-1879-0
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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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