负载型氧电极PtRuIr/TiC催化剂的制备、结构及CV研究

电化学（中英文） ›› 2007, Vol. 13 ›› Issue (3): 302-306.

负载型氧电极PtRuIr/TiC催化剂的制备、结构及CV研究

隋升;马丽荣;

上海交通大学燃料电池研究所,东北大学材料与冶金学院上海200030,辽宁沈阳110004

收稿日期:2007-08-28 修回日期:2007-08-28 出版日期:2007-08-28 发布日期:2007-08-28

Preparation,Structure,and CV Study of the Supported PtRuIr/TiC Electrocatalysts for Oxygen Electrodes

SUI Sheng1*,MA Li-rong 2

(1.Institute of Fuel Cell,Shanghai Jiao Tong University,Shanghai 200030,China,2.School of Materials & Metallurgy,Northeastern University,Shenyang 110004,China

Received:2007-08-28 Revised:2007-08-28 Published:2007-08-28 Online:2007-08-28

摘要/Abstract

摘要： 以TiC纳米粉作载体,超声波分散?共还原沉积方法制备以Pt、Ru和Ir为活性组分的负载型催化剂PtRuIr/TiC.BET比表面积、扫描电子显微镜(SEM)、X光衍射(XRD)及循环伏安(CV)等测试表明:该负载型催化剂活性组分Pt、Ru、Ir微晶(组成2.6%Pt,1.3%Ru,16%Ir和80%TiC,by mass)在载体TiC上趋于无定型化结构,主要分散在载体的外表面上,其析氧性能约是相同成分无负载催化剂的3倍,经过120次CV扫描,PtRuIr/TiC在电解质溶液中几乎不溶解.实验证实,这一电极具有良好的电化学催化性能和稳定性.

关键词: 载体, 氧电极, 负载型电催化剂, 析氧反应

Abstract: The PtRuIr/TiC electrocatalysts were prepared by method of reduction and deposition on TiC powders as supports together with ultrasonic wave dispersion.The sampls were characterized by BET surface area,scanning electron microscope,X-ray diffraction,and cyclic voltammetry techniques.The active components of Pt,Ru,and Ir particles(2.6%Pt,1.3%Ru,16%Ir,and 80%TiC,by mass) were mainly dispersed on the outer surface of the TiC supports,which structures were in favor of fine variable crystallites.It was found that the electrochemical performance of the PtRuIr/TiC electrodes was about three times as that of the unsupported electrocatalysts with the same active compositions for oxygen evolution reaction.After 120 times of CV cycles,there was almost no PtRuIr/TiC dissolving in the electrolyte solution.The experimental results confirmed that the PtRuIr/TiC electrodes had good electrocatalysis activity and electrochemical stability.

Key words: support, oxygen electrode, supported electrocatalyst, oxygen evolution reaction

中图分类号:

TM911.4

隋升;马丽荣;. 负载型氧电极PtRuIr/TiC催化剂的制备、结构及CV研究[J]. 电化学（中英文）, 2007, 13(3): 302-306.

SUI Sheng1*,MA Li-rong 2. Preparation,Structure,and CV Study of the Supported PtRuIr/TiC Electrocatalysts for Oxygen Electrodes[J]. Journal of Electrochemistry, 2007, 13(3): 302-306.

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