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
收藏
页码：4364 / 4370
页数：7
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