Journal
APPLIED SURFACE SCIENCE
Volume 389, Issue -, Pages 181-189Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2016.07.097
Keywords
Ternary alloy; Synergistic effects; Nanodendrities catalysts; Methanol oxidation reaction; Oxygen reduction reaction
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Funding
- National Natural Science Foundation of China [NSFC 21467019, NSFC 21261011]
- Program for New Century Excellent Talents in University [NCET-10-0907]
- Natural Science Foundation of Inner Mongolia Autonomous Region of China [2014M50506]
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The promising Pt-based ternary catalyst is crucial for polymer electrolyte membrane fuel cells (PEM-FCs) due to improving catalytic activity and durability for both methanol oxidation reaction and oxygen reduction reaction. In this work, a facile strategy is used for the synthesis ternary RuMPt (M = Fe, Co, Ni, and Cu) nanodendrities catalysts. The ternary RuMPt alloys exhibit enhanced specific and mass activity, positive half-wave potential, and long-term stability, compared with binary Pt-based alloy and the commercial Pt/C catalyst, which is attributed to the high electron density and upshifting of the d-band center for Pt atoms, and synergistic catalytic effects among Pt, M, and Ru atoms by introducing a transition metal. Impressively, the ternary RuCoPt catalyst exhibits superior mass activity (801.59 mA mg(-1)) and positive half-wave potential (0.857 V vs. RHE) towards MOR and ORR, respectively. Thus, the RuMPt nanocomposite is a very promising material to be used as dual electrocatalyst in the application of PEMFCs. (C) 2016 Elsevier B.V. All rights reserved.
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