Journal
JOURNAL OF POWER SOURCES
Volume 163, Issue 1, Pages 82-86Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2006.04.073
Keywords
direct methanol fuel cell; cathode; methanol tolerance; nanoparticles; platinum rhodium alloy
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PtRh alloy nanoparticles were synthesized for use in enhancing the stability of methanol crossover and electrocatalytic activity for oxygen reduction in direct methanol fuel cells (DMFCs). From the electrochemical results, by comparing Pt in terms of methanol tolerance and oxygen reduction with Pt-based alloys, the PtRh(2:1) was an optimum catalyst for the elimination of CO poisoning during the oxidation of crossover methanol as well as oxygen reduction. A PtRh(2:1) alloy cathode showed a higher power density as well as better performance stability than Pt in DMFC unit cell test. (c) 2006 Elsevier B.V. All rights reserved.
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