【摘 要】
：
WS2 and WO3 are common catalysts in the field of electrocatalysis and are often used as CEs.However,scarce active sites and poor conductivity make their catalytic activity unsatisfactory.This work int
【机 构】
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Functional Materials Laboratory (FML), School of Materials science and Engineering,Xi'an University
【出 处】
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第八届新型太阳能材料科学与技术学术研讨会
论文部分内容阅读
WS2 and WO3 are common catalysts in the field of electrocatalysis and are often used as CEs.However,scarce active sites and poor conductivity make their catalytic activity unsatisfactory.This work introduced phosphorus heteroatoms into WS2/WO3 composite through a simple vapor deposition method to convert WO3 to WO2.9.The synthesized P-WS2/WO2.9 has both doping and oxygen vacancy defects,which creates abundant active sites.The reasonable structural design makes P-WS2/WO2.9 exhibited excellent catalytic performance in the triiodide reduction reaction.The DSSC assembled with the P-WS2/WO2.9-based CE achieves an excellent photoelectric conversion efficiency (PCE) of 7.24%,which is better than the PCE of WS2/WO3-based (5.13%) and Pt-based device (7.14%).In addition,in the cyclic voltammetry cycles stability test,P-WS2/WO2.9 shows better stability than Pt.This new electrocatalyst is expected to become an alternative material for the traditional Pt catalyst materials.
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