PVP及其共聚物凝胶电解质的制备与应用

采用自由基溶液聚合方法.合成出不同分子量和微观结构的聚4-乙烯基吡啶(PVP)及其共聚物,通过与交联剂的化学交联反应固化液体电解质制备了凝胶电解质,将其应用于染料敏化太阳电池.研究发现,分子量小的凝胶电解质电池具有较好的光电转换性能,与纯液体电解质电池相比,短路电流(ISC)、开路电压(V∝)、填充因子(FF)、光电转换效率(η)分别达到液体电解质电池的50.9%、98.1%、93.2%、46.4%.

Preparation and application of PVP and its copolymer gel electrolytes

The polyvinylpyridine and its copolymer with the different molecular weights and microstructures were synthesized by radical solution polymerization method. The gel electrolytes containing liquid-electrolyte were prepared by the chemically cross-linked reaction of polyvinylpyridine with the gelator. The gel electrolytes were used in the dye-sensitized solar cells. It is found that the quasi-solid state dye-sensitized solar cells using gel electrolyte of the lower molecular weight polymer exhibit an optimum photo-electric conversion behavior. Comparing with the liquid-electrolyte dye-sensitized solar cells, the short current, open circuit, fill factor and photo-electric conversion efficiency of the quasi-solid state dye-sensitized solar cells are 50.9%, 98.1%, 93.2% and 46.4%, respectively.