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
收藏
页码：982 / 987
页数：6
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