染料敏化太阳能电池用聚偏氟乙烯/丙烯酸酯互穿网络基凝胶聚合物电解质的制备与性能表征

采用聚偏氟乙烯和丙烯酸酯制备了一种具有互穿聚合物网络结构的凝胶聚合物电解质,并将其应用于染料敏化太阳能电池. 通过FTIR,SEM以及电化学分析等对具有多孔结构的聚合物电解质进行了表征,考察了不同交联单体及不同聚偏氟乙烯/丙烯酸酯质量比对准固态聚合物电解质性能的影响.结果表明,选择合适的交联单体和适宜的交联度可有效提高聚合物膜的孔隙率、吸液量和相应电解质的电化学特性.用聚偏氟乙烯/聚乙二醇二甲基丙烯酸酯互穿聚合物网络结构的电解质组装染料敏化太阳能电池, 在100 mW/cm2模拟光照下,短路电流Isc和开路电压Voc分别为8.476 mA·cm-2和0.674 V, 电池光电转换效率达到2.710%.

PREPARATION AND PROPERTIES OF GEL POLYMER ELECTROLYTE BASED ON PVDF/ACRYLATE INTERPENETRATING POLYMER NETWORK FOR DYE-SENSITIZED SOLAR CELL

The gel polymer electrolytes(GPEs) based on poly (vinylidence fluoride)(PVDF)/acrylate interpenetrating polymer network(IPN) are prepared. The micro-phase separation type GPEs are characterized by Fourier transform infrared(FTIR) spectroscopy, scanning electron microscope(SEM), respectively. Moreover, the conductivity and the voltage-current curves of the electrolytes are measured by electrochemical workstation. The higher porosity and electrolyte uptake are observed in the membranes prepared at lower crosslinker concentration. The suitable cross-linking acrylate monomer improves the porosity and the electrochemical behavior of GPE. A dye-sensitized solar cell(DSSC) employing PGE based on PVDF/poly(ethylene glycol dimethacrylate)(PEGDMA) IPN yields an open-circuit voltage of 0.674 V, short-circuit current of 8.476 mA·cm-2 and the conversion efficiency of 2.710% under 100 mW·cm-2 illumination.