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Enhanced oxygen reduction reaction by bimetallic CoPt and PdPt nanocrystals

RSC Advances, ISSN: 2046-2069, Vol: 3, Issue: 26, Page: 10487-10496
2013
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Metrics Details

  • Citations
    39
    • Citation Indexes
      39
  • Captures
    44

Article Description

Excellent oxygen reduction reaction (ORR) activity of Pt-based bimetallic alloys like CoPt and PdPt has been studied in detail. A simple solution-phase synthetic procedure for the bimetallic alloys of CoPt and PdPt is described here. This method, involving a single-step reaction, is believed to be suitable for large-scale synthesis of both monometallic and multimetallic nanocrystals with required size and shape. Among various catalyst compositions, Pd Pt and CoPt catalysts have shown excellent ORR activity compared with Pt/C and commercial PtCo/C (PtCo/C(comm)) samples. At 0.9 V, CoPt/C and Pd Pt/C exhibit mass activities with values ∼3.8 times and ∼2.1 times higher than that of Pt/C, and CoPt /C exhibits 1.8 times higher activity than that of PtCo/C(comm). Quantification and the effect of surface-oxygenated species generated at higher potentials were studied by stripping voltammetry, in the form of total charge. © The Royal Society of Chemistry 2013.

Bibliographic Details

Bhalchandra A. Kakade; Hailin Wang; Takanori Tamaki; Hidenori Ohashi; Takeo Yamaguchi

Royal Society of Chemistry (RSC)

Chemistry; Chemical Engineering

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