ZIF-67 containing cobalt cation was selected as the research object,and the carbon-containing cobalt matrix nanocomposite(C&Co)was obtained after heat treatment in a nitrogen atmosphere at the appropriate temperat...ZIF-67 containing cobalt cation was selected as the research object,and the carbon-containing cobalt matrix nanocomposite(C&Co)was obtained after heat treatment in a nitrogen atmosphere at the appropriate temperature.The nanostructures and morphologies of the nanocomposite were analyzed by X-ray diffraction,field emission scanning electron microscopy,transmission electron microscopy,and X-ray photoelectron spectroscopy.The electrochemical response was comprehensively characterized by cyclic voltammetry,electrochemical impedance spectroscopy,and Tafel polarization.The electrochemical analysis of the C&Co nanocomposite electrode shows that the electrode has an obvious electrocatalytic activity for the reduction of the triiodide compound.The conversion efficiency of dye-sensitized solar cells prepared with C&Co nanocomposite electrode shows 5.3%under the condition of AM1.5G simulated sunlight irradiation,which shows great application potential in Pt-free electrode materials.展开更多
基金supported by the National Natural Science Foundation of China(21965013)Hainan Provincial Natural Science Foundation(521CXTD438)Hainan Province Postdoctoral Research Funding Project(RZ2300005520)
文摘ZIF-67 containing cobalt cation was selected as the research object,and the carbon-containing cobalt matrix nanocomposite(C&Co)was obtained after heat treatment in a nitrogen atmosphere at the appropriate temperature.The nanostructures and morphologies of the nanocomposite were analyzed by X-ray diffraction,field emission scanning electron microscopy,transmission electron microscopy,and X-ray photoelectron spectroscopy.The electrochemical response was comprehensively characterized by cyclic voltammetry,electrochemical impedance spectroscopy,and Tafel polarization.The electrochemical analysis of the C&Co nanocomposite electrode shows that the electrode has an obvious electrocatalytic activity for the reduction of the triiodide compound.The conversion efficiency of dye-sensitized solar cells prepared with C&Co nanocomposite electrode shows 5.3%under the condition of AM1.5G simulated sunlight irradiation,which shows great application potential in Pt-free electrode materials.
