聚偏氟乙烯准固态电解质薄膜的制备及性能研究  

Preparation and characterization of quasi-solid-state electrolyte films based on poly vinylidene fluoride

作　　者：王志涛[1,2] 张林森[2] 金恺[2] 白庆玲 司延举 董会超[2] 王力臻[2] 

机构地区：[1]武夷学院生态与资源工程学院,福建武夷山354300 [2]郑州轻工业学院河南省表界面科学重点实验室,河南郑州450001 [3]许继集团河南龙源花木有限责任公司,河南许昌462000

出　　处：《郑州轻工业学院学报（自然科学版）》2014年第5期6-11,共6页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：河南省科技计划项目(122300410297);河南省高校青年骨干教师资助计划项目;郑州轻工业学院校级青年骨干教师培养对象资助计划项目(2011XGGJS005)

摘　　要：以聚偏氟乙烯(PVDF)为凝胶剂、DMF为溶剂,用旋涂法制备了PVDF聚合物薄膜.采用扫描电镜、电化学交流阻抗、线性扫描伏安法分别对PVDF薄膜的微观形貌、准固态电解质的电导率及其组装的染料敏化太阳能电池(DSSCs)的输出电流-电压性能进行表征.测试结果表明:PVDF与DMF的质量比及匀胶机转速,影响PVDF膜的微观形貌及吸液性能,从而影响准固态电解质的电导率及DSSCs的光电性能.当mPVDF∶mDMF=1∶8,匀胶机转速为2 500 r/min时,DSSCs的综合性能较好,其开路电压为0.726 V,短路电流密度为9.96 mA·cm-2,光电转换效率为3.10%.The polymeric membranes were prepared via spin coating method,which was synthesized with polyvinylidene pluoride（ PVDF） as gel,N,N-dimethyl formamide（ DMF） as solvent. The micro-morphology of polymer membranes,and conductivity of quasi-solid-state electrolytes and the output current-voltage（ I-V） properties of the cells were characterized by scanning electron microscopy（ SEM）,electrochemical impendance spectroscopy（ EIS） and linear sweep voltammetry（ LSV）. The results showed that the mass ratio of PVDF and DMF,and the rotation rate of spin coating influenced the mesh morphology and the absorbent properties of the polymeric membranes,which influenced the quasi-solid-state electrolyte ionic con-ductive performance and the photoelectric performance of the DSSCs. When the rotating speed of spin coating machine was fixed at 2 500 r /min and the mass ratio of PVDF and DMF was 1∶8,the comprehensive performance of DSSCs was better. The open circuit voltage（ Voc）,short circuit current（ Jsc） and conversion efficiency（ η） showed the values of 0. 726 V,9. 96 mA·cm- 2and 3. 10%,respectively.

关 键 词：染料敏化太阳能电池 准固态电解质 聚偏氟乙烯 

分 类 号：TM914.4[电气工程—电力电子与电力传动] O631[理学—高分子化学]