基于偏氟乙烯-六氟丙烯共聚物凝胶电解质的染料敏化太阳电池光电性能研究  

Research on the Dye-sensitized Solar Cells Based on P(VDF-HFP)-type Polymer Gel Electrolyte

作　　者：张玉香[1,2] 霍志鹏[3,1] 张昌能[3,1] 戴松元[3,1] 

机构地区：[1]中国科学院等离子体物理研究所太阳能材料与工程研究室,合肥230031 [2]安徽广播影视职业技术学院,合肥230022 [3]中国科学院新型薄膜太阳电池重点实验室,合肥230031

出　　处：《化学学报》2009年第19期2253-2257,共5页Acta Chimica Sinica

基　　金：国家重点基础研究发展规划(No.2006CB202600);中国科学院知识创新(No.KGCX2-YW-326);安徽省科技攻关(No.06012024A)资助项目

摘　　要：采用偏氟乙烯-六氟丙烯共聚物[P(VDF-HFP)]胶凝3-甲氧基丙腈基液体电解质,成功制备了凝胶电解质并组装成准固态染料敏化太阳电池.差示扫描量热测试结果表明凝胶电解质的溶液-凝胶转变温度(TSG)为71℃.利用电化学方法分析了凝胶电解质中I3-/I-电对的表观扩散系数及电导率低于液体电解质的原因,同时结合暗态伏安法考察了电池内部TiO2多孔薄膜电极/电解质界面处的暗反应,分析了凝胶化对电池光伏性能的影响.进一步老化实验结果表明凝胶电池的稳定性明显优于液体电池.A quasi-solid-state dye-sensitized solar cell （DSC） was fabricated using poly（vinylidenefluoride-co-hexafluoropylene） [P（VDF-HFP）] as a polymer gelator to form gel electrolyte. The differential scanning calorimetry measurement showed the solution-to-gel transition temperature （TSG） of the gel was about 71 ℃. It was found that the gelation decreased the apparent diffusion coefficient （Dapp） values of triiodide and iodide ions and the conductivity in electrolyte. The influence of gelation on the charge recombination at the dyed TiO2 mesoscopic electrode/electrolyte interface was investigated by adopting a linear sweep voltammetry technology. The result showed that the gelation increased the dark reaction at the dyed TiO2 mesoscopic electrode/electrolyte interface. The result of the accelerated aging test showed that the gel electrolyte based DSC exhibited much better stability than the device based on the liquid electrolyte.

关 键 词：凝胶电解质 表观扩散系数 电导率 染料敏化 太阳电池 

分 类 号：TM914.4[电气工程—电力电子与电力传动]