Free-standing ternary PtPdRu nanocatalysts with enhanced activity and durability for methanol electrooxidation

Yi Yang, Lai Ming Luo, Rong Hua Zhang, Juan Juan Du, Peng Cheng Shen, Zhong Xu Dai, Chenghua Sun, Xin Wen Zhou

Research output: Contribution to journalArticleResearchpeer-review

24 Citations (Scopus)

Abstract

Morphology and dimensionality are key factors to affect the catalytic activity and durability of Pt-based nanocatalysts. In this work, dendritic porous three-dimensional PtPdRu (PtPdRu-3D) nanocatalysts were fabricated by a facile one-pot hydrothermal strategy with triblock pluronic copolymer P123 as the reducer, stabilizer and structure director. Compared with zero-dimensional PtPdRu (PtPdRu-0D) and two-dimensional PtPdRu (PtPdRu-2D) and commercial Pt/C, PtPdRu-3D showed ultrahigh electrochemical surface areas (ECSA), and demonstrated an outstanding electrocatalytic activity towards methanol oxidation reaction (MOR), specifically 2.9 times higher than that of PtPdRu-0D, 1.3 times higher than PtPdRu-2D, and 1.7 times higher than commercial Pt/C. Besides, durability tests demonstrated that PtPdRu-3D displayed the lowest ECSA decay (from 100% to 80.81%) due to its 3D open-framework surface which can restrain the individual particles from aggregating.

Original languageEnglish
Pages (from-to)1094-1102
Number of pages9
JournalElectrochimica Acta
Volume222
DOIs
Publication statusPublished - 20 Dec 2016

Keywords

  • Dendritic
  • Dimensional
  • Durability
  • Electrocatalytic activity
  • PtPdRu ternary nanocatalysts

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