Synthesis of Pd/TiO2 nanotubes/Ti for oxygen reduction reaction in acidic solution

被引：50

作者：

Fu, Y. ^{[1
]}

Wei, Z. D. ^{[1
,2
]}

Chen, S. G. ^{[2
]}

Li, L. ^{[2
]}

Feng, Y. C. ^{[1
]}

Wang, Y. Q. ^{[2
]}

Ma, X. L. ^{[1
]}

Liao, M. J. ^{[1
]}

Shen, P. K. ^{[3
]}

Jiang, S. P. ^{[4
]}

机构：

[1] Chongqing Univ, Sch Chem & Chem Engn, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China

[3] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

[4] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

JOURNAL OF POWER SOURCES | 2009年 / 189卷 / 02期

关键词：

Oxygen reduction reaction; Electrocatalysis; TiO2; nanotubes; Pd; Fuel cells; ARRAYS; CO; OXIDATION; ELECTROCATALYSTS; CATALYST;

D O I：

10.1016/j.jpowsour.2008.12.065

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：

Highly ordered and uniformly distributed TiO2 nanotubes on a pure titanium substrate (TNTs/Ti) are successfully fabricated by a pulse anodic oxidation method as the support for Pd electrocatalyst. Pd is electrochemically deposited onto TNTs/Ti support. The sensitization with SnCl2 and activation with PdCl2 are critical for the formation of highly dispersed Pd nanoparticles on the TNTs/Ti support. It has been found that both Pd/TNTs/Ti and Pt electrodes show the similar electrochemical behavior in H2SO4, implying the possibility to develop the Pt-free alternative electrocatalyst based on the Pd/TNTs/Ti system in acid medium. The preliminary results in this work show that the Pd/TNTs/Ti catalysts have an acceptable catalytic activity for the oxygen reduction reaction (ORR) in acid medium. The factors influencing the structure of TNTs and the catalytic activity of Pd/TNTs/Ti for the ORR are also studied in detail. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：982 / 987

页数：6