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

doi:10.1002/adfm.201101227

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^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

244 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	4364-4370
Number of pages	7
Journal	Advanced Functional Materials
Volume	21
Issue number	22
DOIs	https://doi.org/10.1002/adfm.201101227
Publication status	Published - 2011 Nov 22
Externally published	Yes

Keywords

electrooxidation
nanoporous metal
oxygen reduction
palladium-nickel catalyst

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1002/adfm.201101227

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

abstract = "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.",

keywords = "electrooxidation, nanoporous metal, oxygen reduction, palladium-nickel catalyst",

author = "Luyang Chen and Hai Guo and Takeshi Fujita and Akihiko Hirata and Wei Zhang and Akihisa Inoue and Mingwei Chen",

year = "2011",

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doi = "10.1002/adfm.201101227",

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T1 - Nanoporous PdNi bimetallic catalyst with enhanced electrocatalytic performances for electro-oxidation and oxygen reduction reactions

AU - Chen, Luyang

AU - Guo, Hai

AU - Fujita, Takeshi

AU - Hirata, Akihiko

AU - Zhang, Wei

AU - Inoue, Akihisa

AU - Chen, Mingwei

PY - 2011/11/22

Y1 - 2011/11/22

N2 - 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.

AB - 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.

KW - electrooxidation

KW - nanoporous metal

KW - oxygen reduction

KW - palladium-nickel catalyst

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

Abstract

Keywords

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