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采用一步电化学法制备了石墨烯支持Pt纳米粒子修饰电极(Nano-Pt/ERGO/GCE),利用交流阻抗研究了电极的性能以及该修饰电极的电催化活性。结果表明,采用循环伏安法制备石墨烯支持Pt纳米粒子,具有制备方法简单且纳米粒子粒径可控等优点。与单独的Pt纳米粒子修饰电极相比,Nano-Pt/ERGO/GCE电极表面Pt粒子分布更均匀,对甲醇的氧化具有极强的电催化活性。研究成果在甲醇燃料电池的研发中具有潜在的应用价值。
The graphene-supported Pt nanoparticle modified electrode (Nano-Pt / ERGO / GCE) was prepared by one-step electrochemical method. The electrochemical impedance spectroscopy was used to study the performance of the electrode and the electrocatalytic activity of the modified electrode. The results show that the preparation of graphene by cyclic voltammetry supported Pt nanoparticle has the advantages of simple preparation method and controlled particle size of the nanoparticle. The Pt particles on the surface of Nano-Pt / ERGO / GCE electrode have a more uniform distribution than the Pt-modified Pt electrode alone and have strong electrocatalytic activity for the oxidation of methanol. The research results have potential application value in the research and development of methanol fuel cell.