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研究论文

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
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  • 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

  网络出版日期: 2007-08-28

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

  • SUI Sheng ,
  • MA Li-rong
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  • (1.Institute of Fuel Cell,Shanghai Jiao Tong University,Shanghai 200030,China,2.School of Materials & Metallurgy,Northeastern University,Shenyang 110004,China

Received date: 2007-08-28

  Revised date: 2007-08-28

  Online published: 2007-08-28

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.

本文引用格式

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, 2007 , 13(3) : 302 -306 . DOI: 10.61558/2993-074X.1827

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.
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