Effect of Deposition Potential on the Structure, Electrocatalytic Activity and Stability of Pt Films for Methanol Oxidation

被引：7
|
作者：
Ab Malek, Siti Norsafurah [1 ]
Mohd, Yusairie [1 ]
机构：
[1] Univ Teknol MARA, Fac Sci Appl, Shah Alam 40450, Selangor, Malaysia
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2017年 / 12卷 / 02期
关键词：
Pt films; electrodeposition; methanol oxidation; electrocatalytic activity; PLATINUM NANOCRYSTALS; FUEL-CELLS; ELECTROOXIDATION; CATALYSTS; NANOPARTICLES; COMPOSITES; ETHANOL; METAL;
D O I：
10.20964/2017.02.77
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The effect of deposition potential on the structure and electrocatalytic properties of Pt films electrodeposited on Ti was investigated. By controlling a constant deposition potential either at -0.15 V, -0.20 V, -0.25 V or -0.30 V, various shapes of Pt structures such as cauliflower-like, durian-like, needle-like and worm-like can be observed by FESEM. The face-centered cubic (fcc) structure of all the prepared Pt films was confirmed by XRD. The highest specific electrochemically active surface area (ECSA) was obtained for Pt films with durian-like shape prepared at -0.2 V with 6.0 m(2) g(-1) which gave the best catalytic activity and stability for methanol oxidation in alkaline medium.
引用
收藏
页码：1561 / 1571
页数：11
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