Nanoporous PdNi Bimetallic Catalyst with Enhanced Electrocatalytic Performances for Electro-oxidation and Oxygen Reduction Reactions

被引：262

作者：

Chen, Luyang ^{[2
]}

Guo, Hai ^{[1
]}

Fujita, Takeshi ^{[2
]}

Hirata, Akihiko

Zhang, Wei ^{[1
]}

Inoue, Akihisa ^{[1
,2
]}

Chen, Mingwei ^{[2
,3
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, World Premier Int WPI Res Ctr, Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

[3] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Sch Mat Sci & Engn, Shanghai, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2011年 / 21卷 / 22期

关键词：

FORMIC-ACID OXIDATION; AU; METALS; ALLOY; CO; NANOPARTICLES; COMPOSITE; PALLADIUM; PLATINUM; FE;

D O I：

10.1002/adfm.201101227

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 similar to 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.

引用

页码：4364 / 4370

页数：7

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