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《Electronic Components and Materials》 2018-05
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In situ preparation of flower-like Co S as counter electrode for dye sensitized solar cells

WANG Jiali;LEI Shengjun;ZHAO Yaqiang;HUANG Xiangping;SUN Xiaohua;College of Materials and Chemical Engineering, College of Science, China three gorges University;Zhejiang Safety Special Equipment Inspection & Testing Co., Ltd;  
Synthesis of counter electrodes(CEs) with Pt-free, FTO-Free, good conductivity and excellent electrocatalytic activity is significant for the study of dye-sensitized solar cells(DSSCs). The flower-like Co S were prepared by a one-step method on graphite paper(GP) substrate, and then used as the CEs of DSSCs. By scanning electron microscopy(SEM), X ray diffraction(XRD), X ray photoelectron spectroscopy(XPS), cyclic voltammetry curves(CV), electrochemical impedance spectroscopy(EIS), Tafel polarization curves and photovoltaic characteristic curves(JV), the morphology, phase and chemical state, and electrochemical performance were researched. The test results show that after adding CTAB, the diameter of flower-like cobalt sulfide becomes smaller and evenly distributes on the graphite paper substrate, which has higher catalytic activity. Compared with Pt electrode(6.73%), its photoelectric conversion efficiency achieves 7.57%.
【Fund】: 国家自然科学基金项目(51602176;51602175)
【CateGory Index】: TM914.4
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