Electro-oxidation of methanol, 1-propanol and 2-propanol on Pt and Pd in alkaline medium

被引：115
作者：
Liu, Hanping [1 ]
Ye, Jianqing [1 ]
Xu, Changwei [1 ,2 ]
Jiang, San Ping [2 ]
Tong, Yexiang [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Peoples R China
[2] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
来源：
JOURNAL OF POWER SOURCES | 2008年 / 177卷 / 01期
基金：
中国国家自然科学基金;
关键词：
fuel cells; 1-propanol; 2-propanol; palladium; alkaline medium;
D O I：
10.1016/j.jpowsour.2007.11.015
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：
Pd is investigated as electrocatalyst for 1-propanol and 2-propanol oxidation and compared with the conventional catalyst of Pt in alkaline medium. The results show that Pd is a good electrocatalyst for 1-propanol and 2-propanol oxidation. The oxidation reaction of I-propanol and 2-propanol shows a very low activity on Pt electrode, however the oxidation reaction of I-propanol and 2-propanol shows a high activity on Pd electrode in alkaline medium. The current densities of 1-propanol and 2-propanol oxidation on Pd electrode are much higher at corresponding potentials than that of methanol oxidation and the onset potentials of 1-propanol and 2-propanol oxidation on Pd electrode are more negative compared with that of methanol oxidation. The 1-propanol and 2-propanol oxidation on Pd electrode shows a stable performance. The results show that Pd can take the place of Pt for 1-propanol and 2-propanol oxidation in alkaline medium. The present study shows a promising choice of Pd as effective electrocatalyst for 1-propanol and 2-propanol electro-oxidation in alkaline medium. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：67 / 70
页数：4
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