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同种材料而表面结构不同的电极往往有完全不同的电化学性能.使用在原子水平上表面结构明确的单晶电极不仅有助于对电极表面吸脱附过程、电场作用下表面结构重组、双电层微观结构、分子水平上的反应机理等基础理论进行深入研究,且对高选择性、高效电催化剂的研制也有指导意义.单晶电化学研究的基础就是制备定向不同的单晶电极.本文建立了金属单晶电极制备方法,并报道了Cu~(2+)在Pt单晶电极上UPD(欠电位沉积)过程的研究结果.
Electrodes with the same kind of material and different surface structures often have completely different electrochemical properties. The use of a single crystal electrode with a well-defined surface structure at the atomic level not only helps to adsorb and desorb the electrode surface but also reorganizes the surface structure under the action of an electric field. The microstructure of the electric layer and the reaction mechanism at the molecular level have been studied in depth and also provide guidance for the development of highly selective and efficient electrocatalysts.The basis of single crystal electrochemical research is the preparation of single crystal electrodes with different orientations. The preparation method of metal single crystal electrode was established and the results of UPD (underpotential deposition) process of Cu ~ (2+) on Pt single crystal electrode were reported.