Truncated octahedral Pt3Ni oxygen reduction reaction electrocatalysts

Jianbo Wu, Junliang Zhang, Zhenmeng Peng, Shengchun Yang, Frederick T. Wagner, Hong Yang

Research output: Contribution to journalArticle

Abstract

This communication describes the preparation of carbon-supported truncated-octahedral Pt3Ni nanoparticle catalysts for the oxygen reduction reaction. Besides the composition, size, and shape controls, this work develops a new butylamine-based surface treatment approach for removing the long-alkane-chain capping agents used in the solution-phase synthesis. These Pt3Ni catalysts can have an area-specific activity as high as 850 μA/cm2Pt at 0.9 V, which is 4 times better than the commercial Pt/C catalyst (0.2 mA/cm2Pt at 0.9 V). The mass activity reached 0.53 A/mgPt at 0.9 V, which is close to a factor of 4 increase in mass activity, the threshold value that allows fuel-cell power trains to become cost-competitive with their internal-combustion counterparts. Our results also show that the mass activities of these carbon-supported Pt 3Ni nanoparticle catalysts strongly depend on the (111) surface fraction, which validates the results of studies based on Pt3Ni extended-single-crystal surfaces, suggesting that further development of catalysts with still higher mass activities is highly plausible.

Original languageEnglish (US)
Pages (from-to)4984-4985
Number of pages2
JournalJournal of the American Chemical Society
Volume132
Issue number14
DOIs
StatePublished - Apr 14 2010
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Fingerprint Dive into the research topics of 'Truncated octahedral Pt<sub>3</sub>Ni oxygen reduction reaction electrocatalysts'. Together they form a unique fingerprint.

  • Cite this