Carbon-Supported Pt-Pd Alloy as a Methanol-Tolerant-Oxygen-Reduction Electro-Catalyst for DMFCs

被引：1
|
作者：
Nishanth, K. G. [1 ]
Sridhar, P. [1 ]
Pitchumani, S. [1 ]
Shukla, A. K. [2 ]
机构：
[1] CSIR, Cent Electrochem Res Inst, Madras Unit, CSIR Madras Complex, Madras 600113, Tamil Nadu, India
[2] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India
来源：
ELECTRODE PROCESSES RELEVANT TO FUEL CELL TECHNOLOGY | 2010年 / 28卷 / 23期
关键词：
ELECTROCATALYSTS; FE; CO; NI; NANOPARTICLES; PLATINUM; KINETICS; PURE; ACID;
D O I：
10.1149/1.3502358
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Methanol-tolerant Pt-Pd alloy catalysts supported on to carbon with varying Pt:Pd atomic ratios of 1:1, 2:1 and 3:1 are prepared by a novel wet-chemical method and characterized using powder XRD, FESEM and EDAX techniques. The optimum atomic weight ratio of Pt to Pd in the carbon-supported alloy catalyst as established by linear-sweep voltammetry (LSV) and cell-polarization studies is found to be 2:1. A direct methanol fuel cell (DMFC) employing the carbon-supported Pt-Pd(2:1) alloy catalyst as the cathode catalyst delivers a peak-power density of 115 mW/cm(2) at 70 degrees C as compared to the peak-power density value of 60 mW/cm(2) obtained with the DMFC employing carbon-supported Pt (Pt/C) catalyst operating under similar conditions.
引用
收藏
页码：273 / +
页数：3
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