沿温度梯度热解钒多酸制备染料敏化太阳能电池V_(2)O_(3)@C对电极催化剂  

V_(2)O_(3)@C Catalyst Prepared by Pyrolysis of Polyoxovanadate Along Temperature Gradient and Used as Counter Electrode of Dye-sensitized Solar Cell

作　　者：栗元皓 刘淑慧 武莹杉 武克忠[1] 张会 LI Yuanhao;LIU Shuhui;WU Yingshan;WU Kezhong;ZHANG Hui(College of Chemistry and Materials Science,Hebei Normal University,Shijiazhuang 050024,China;Department of Chemical and Environmental Engineering,Hebei Chemical&Pharmaceutical College,Shijiazhuang 050026,China;Journal Editorial Department,Hebei Normal University,Shijiazhuang 050024,China)

机构地区：[1]河北师范大学化学与材料科学学院,石家庄050024 [2]河北化工医药职业技术学院化学与环境工程系,石家庄050026 [3]河北师范大学学报编辑部,石家庄050024

出　　处：《河北师范大学学报（自然科学版）》2025年第1期54-60,共7页Journal of Hebei Normal University：Natural Science

基　　金：国家自然科学基金(2193026);河北省自然科学基金(B2021205010)。

摘　　要：以钒多酸为V源,乙二醇为C源,采用溶剂热法制备前驱体,沿温度梯度500,600,700,800,900℃热解前驱体,得到5种不同组成和形貌的V_(2)O_(3)@C复合材料,并分别将其作为染料敏化太阳能电池(DSSCs)对电极.结果显示,700℃下所制备的V_(2)O_(3)@C复合材料电催化性能最优,能量转换效率(PCE)最高,为5.57%.这归因于V_(2)O_(3)和C之间的协同作用增强了催化剂的导电性,增大了材料的比表面积而产生大量的催化活性位点.The precursors of catalysts were prepared by solvothermal method using polyoxovanadate as V source and ethylene glycol as C source.When the precursors were pyrolysed along the temperature gradient of 500,600,700,800,900 ℃,five V_(2)O_(3)@C composites with different compositions and morphologies were obtained and used as counter electrodes of dye-sensitised solar cells(DSSCs),respectively.The results showed that the V_(2)O_(3)@C composites prepared at 700 ℃ had the best electrocatalytic performance and the highest power conversion efficiency(PCE) of 5.57% among them.This is attributed to the synergistic interaction between V_(2)O_(3) and C,which enhances the conductivity of the catalyst and increases the specific surface area of the material to generate a large number of catalytically active sites.

关 键 词：钒多酸 溶剂热法 染料敏化太阳能电池 对电极 

分 类 号：TM911.4[电气工程—电力电子与电力传动]