Electrodeposition of dendritic palladium nanostructures on carbon support for direct formic acid fuel cells

被引：20
|
作者：
Maniam, Kranthi Kumar [1 ]
Muthuleumar, Volga [1 ]
Chetty, Raghuram [1 ]
机构：
[1] Indian Inst Technol Madras, Dept Chem Engn, Madras, Tamil Nadu, India
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 41期
关键词：
Electrodeposition; Formic acid oxidation; Palladium; Dendrites; Electrochemical activation; Fuel cells; OXYGEN REDUCTION; METHANOL ELECTROOXIDATION; ELECTROCATALYTIC ACTIVITY; CATALYTIC-ACTIVITY; OXIDATION; PD; NANOPARTICLES; NANOTUBES; PLATINUM; GROWTH;
D O I：
10.1016/j.ijhydene.2016.08.064
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Palladium (Pd) dendrites were synthesized on electrochemically activated carbon (Vulcan XC-72R) support by a simple template free potentiostatic (constant voltage) deposition. Scanning electron micrographs displayed a dendritic morphology when deposited at potentials <0.5 V (vs. RHE), whereas spherical aggregates were obtained at potentials >0.5 V. Transmission electron micrographs and X-ray diffraction pattern confirmed the difference in morphological features and growth of Pd dendrites. Pd deposited at 0.4 V showed higher electrochemical surface area of 128.5 m(2) g(-1) in comparison to 25.1 m(2) g(-1) obtained for Pd deposited at 0.5 V and also displayed enhanced activity towards formic acid oxidation. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：18602 / 18609
页数：8
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