欢迎访问《电化学(中英文)》期刊官方网站,今天是
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
展开
  • 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
Expand
  • (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.

参考文献

[1]Chen Gaoying,Bare Simon R,Mallouk Thomas E.De-velopment of supported bifunctional electrocatalysts forunitized regenerative fuel cells[J].J ElectrochemicalSociety,2002,149(8):A1092-A1099. [2]Andolftto F,Durand R,Michas A,et al.Solid polymerelectrolyte water electrolysis:electrocatalysis and long-term stability[J].Int J Hydrogen Energy,1994,19(5):421-427. [3]Ledjeff K,Mahlendorf V,Peinecke F,et al.Develop-ment of electrode/membrance units for the reversiblesolid polymer fuel cell(RSPFC)[J].ElectrochemicaActa,1995,40(3):315-319. [4]Shao Zhigang,Yi Baolian,Han Ming.Bifunctional e-lectrodes with a thin catalyst layer for‘unitized’protonexchange membrane regenerative fuel cell[J].J PowerSources,1999,79:82-85 [5]Rasten Egil,Hagen Georg,Tunold Reidar.Electroca-talysis in water electrolysis with solid polymer electrolyte[J].Electrochimica Acta,2003,48:3945-3952. [6]Ioroi T,Kitazawa N,Yasuda K,et al.IrO2deposited Ptelectrocatalysts for unitized regenerative polymer electro-lyte fuel cells[J].J Applied Electrochemistry,2001,31:1179-1183 [7]Ioroi Tsutomu,Yasuda Kazuaki,Siroma Zyun,et al.Thin film electrocatalyst layer for unitized regenerativepolymer electrolyte fuel cells[J].J Power Sources,2002,112:583-587. [8]Ioroi Tsutomu,Okub Takanori,Yasuda Kazuaki,et al.Influence of PTFE coating on gas diffusion backing forunitized regenerative polymer electrolyte fuel cells[J].JPower Sources,2003,124:385-389. [9]Yim Sung-Dae,Lee Won-Yong,Yoon Young-Gi,et al.Optimization of bifunctional electrocatalyst for PEMunit-ized regenerative fuel cell[J].Electrochimica Acta,2004,50:713-718. [10]Yim Sung-Dae,Park Gu-Gon,Sohn Young-Jun,et al.Optimization of PtIr electrocatalyst for PEMURFC[J].Int J Hydrogen Energy,2005,30:1345-1350. [11]Wittstadt U,Wagner E,Jungmann T.Membrane elec-trode assemblies for unitised regenerative polymer elec-trolyte fuel cells[J].J Power Sources,2005,145:555-562. [12]Vracˇar Lj M,Krstajic'N V,Radmilovic'V R,et al.Electrocatalysis by nanoparticles-oxygen reduction onEbonex/Pt electrode[J].J Electroanalytical Chemis-try,2006,587:99-107. [13]Pettersson J,Ramsey B,Harrison D.A review of thelatest developments in electrodes for unitized regenera-tive polymer electrolyte fuel cells[J].J PowerSources,2006,157:28-34. [14]Song Shidong,Zhang Huamin,Ma Xiaoping,et al.Bifunctional oxygen electrode with corrosion-resistivegas diffusion layer for unitized regenerative fuel cell[J].Electrochemistry Communications,2006,8:399-405. [15]Teng Jia-wei(滕加伟),Jin Li-hua(金丽华),TangLun-cheng(唐伦成).Study on the oxygen electrodesof alkaline fuel cells effect of dopant on the act ivity ofAg/C catalyst[J].Electrochemistry,1997,3(4):428-432.
文章导航

/