Nanoporous PdNi bimetallic catalyst with enhanced electrocatalytic performances for electro-oxidation and oxygen reduction reactions

Luyang Chen, Hai Guo, Takeshi Fujita, Akihiko Hirata, Wei Zhang, Akihisa Inoue, Mingwei Chen*

*この研究の対応する著者

研究成果: Article査読

238 被引用数 (Scopus)

抄録

A nanoporous PdNi (np-PdNi) bimetallic catalyst fabricated by electrochemically dealloying a Pd20Ni80 alloy in an acid solution is reported. Residual Ni in the nanoporous alloy can be controlled by tuning dealloying potentials and the electrocatalysis of the np-PdNi shows evident dependence on Ni concentrations. With ∼9 at.% Ni, the np-PdNi bimetallic catalyst presents superior electrocatalytic performances in methanol and formic acid electro-oxidation as well as oxygen reduction in comparison with commercial Pd/C and nanoporous Pd (np-Pd). The excellent electrocatalytic properties of the dealloyed np-PdNi bimetallic catalyst appear to arise from the combined effect of unique bicontinuous nanoporosity and bimetallic synergistic action. The nanoporous PdNi (np-PdNi) bimetallic catalyst is fabricated by electrochemical dealloying of a Pd20Ni80 alloy. Residual Ni in the nanoporous alloy can be controlled by tuning dealloying potentials and the eletrocatalysis of the np-PdNi shows evident dependence on the Ni concentrations. The superior electrocatalytic properties of the dealloyed np-PdNi bimetallic catalyst appear to arise from the combined effect of unique bicontinuous nanoporosity and bimetallic synergistic action.

本文言語English
ページ(範囲)4364-4370
ページ数7
ジャーナルAdvanced Functional Materials
21
22
DOI
出版ステータスPublished - 2011 11月 22
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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