摘要
采用浸渍还原法,优化碳载体热处理条件,制备出具有高分散性、平均粒径为3.3nm的Pt/C电催化剂.通过TEM、XRD方法对催化剂进行结构表征;利用Pt/C薄膜电极结合CV法评价了电催化剂的性能.测试结果表明,采用VulcanXC 72碳黑,在600℃下、氮气(或氩气)中进行热处理,所制得的Pt/C电催化剂对氧还原反应具有良好的电催化活性.
The supported Pt/C electro catalysts about 3.3 nm in size have been prepared by the impregnation-reduction method. The carbon black supports heat-treated in N_2 or Ar stream at 600 ℃ exhibits a positive role of promoting Pt dispersion to a higher degree. The particle size and the dispersion degree of Pt supported on carbon are observed by TEM. The surface structure and composition of supports and Pt/C electro catalyst are analyzed by XRD and XPS methods. The thin film electrode and cyclic voltammogram methods are used for the evaluation of the electro catalytic activity to oxygen reductive reaction in this paper.
出处
《天津理工学院学报》
2003年第4期47-50,共4页
Journal of Tianjin Institute of Technology
基金
天津市科委重点科技攻关基金资助项目(003100911)
