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

被引：116

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

页码：67 / 70

页数：4

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