中文摘要：

利用静电纺丝技术,制备了不同的聚合物/TiO2杂化纳米纤维微孔膜,吸附液体电解质后形成聚合物/TiO2杂化纳米纤维微孔膜准固态电解质,应用于制备准固态染料敏化太阳能电池（DSSCs）.测试了电纺聚合物纳米纤维微孔膜电解质的吸液率、孔隙率、离子电导率等参数,研究了纳米纤维微孔膜准固态电解质DSSCs的光伏性能.结果显示,TiO2的掺入可提高聚合物/TiO2杂化纳米纤维微孔膜对液态电解质的浸润扩散性能,从而提高纳米纤维微孔膜对液态电解质的吸附能力.组装的DSSCs的光电转换效率可达液态电解质的90%以上,并具有较好的长期工作稳定性.

英文摘要：

The electrospinning technique provides a simple,cost-effective approach for producing polymeric and inorganic nanofibers with structures that vary with the processing parameters.In this paper,the polymer/TiO2 hybrid nanofibers microporous membranes were prepared from a polymer solution containing titanium（IV） butoxide（TBT） by electrospinning technique.The as-spun nanofibers microporous membranes were placed in air for 5 h to allow complete hydrolysis.The morphology of the microporous membranes was observed using electron scanning microscopy（SEM） under vacuum condition.The uptake and porosity of microporous membranes were investigated by weighting method before and after soaking electrolyte.The ionic conductivity of the microporous membranes was measured using the complex impedance technique.The blocking cell of stainless steel/microporous membranes/stainless steel was used at 1—105 Hz frequency range at 25 ℃.The AC amplitude was 5 mV.The TiO2 electrode was obtained by spreading titania paste（P25） on the conducting glass substrate using a doctor blade technique.The dye-sensitized solar cells（DSSCs） devices were fabricated based on the microporous membrane electrolyte by sandwiching a slice of the polymer/TiO2 hybrid nanofibers microporous membrane between a dye-sensitized TiO2 electrode and a Pt counter electrode.The edges of the cell were sealed with narrow strips of Surlyn hot melt.The morphology and three-dimensional structure of polymer/TiO2 hybrid nanofibers microporous membranes did not markedly change after absorbing liquid electrolyte,which indicated that the introduction of TiO2 into polymer nanofibers could improve the mechanical properties of the nanofibers.These also made the polymer/TiO2hybrid nanofibers microporous membranes possess high uptake and porosity.The TiO2 content in hybrid nanofibers was about 50 wt% according to the TG results.The wetting and diffusion properties of hybrid nanofibers microporous membranes to liquid electrolyte were improved due to the incorporation