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电化学扫描隧道显微镜(ECSTM)因其能提供真实空间的原子分辨图象而成为现场研究电极表面结构的最强有力的手段之一。近来,欠电位沉积(UPD)得到日益广泛的研究,人们观察到了Cu在Au(111)和Pt(111)上的UPD层的原子结构。而在金属体相沉积的ECSTM研究中所得图象的分辨率较低。我们用ECSTM在控电位下对Cu在高序石墨(HOPG)上的
Electrochemical Scanning Tunneling Microscopy (ECSTM) is one of the most powerful means of investigating the surface structure of electrodes because of its ability to provide atomically resolved images in real space. Recently, the underpotential deposition (UPD) has been increasingly studied, and the atomic structure of the UPD layer of Cu on Au (111) and Pt (111) has been observed. The resolution of the resulting image in the ECSTM study of metal bulk deposition is lower. We used ECSTM to control Cu on high-order graphite (HOPG) at controlled potentials