FTO中间层对镍锑共掺杂二氧化锡电极性能的影响研究

In the present work, fluoride doped tin oxide (FTO) as an interlayer was introduced into nickel and antimony co-doped tin dioxide (NATO) coated titanium electrodes to investigate the influence of FTO interlayer on the structural properties and lifetime performance of the electrodes. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques were used to characterize the morphology and crystal structure of the electrodes with or without FTO interlayer. The electrode surface became smoother with FTO interlayer introduced while the crystallite size reduced. Electrochemical impedance spectroscopy (EIS) was also adopted to analyze the electrodes' electrochemical behavior. With FTO interlayer introduced, the formation of titanium dioxide insulating layer on the titanium substrate was significantly retarded during the anodic process. The accelerated lifetime tests presented that the lifetime of the electrodes with proper FTO interlayer was 6 times longer than that without FTO interlayer. The mechanisms for the electrodes' lifetime enhancement with FTO interlayer were discussed.