物理化学学报2012，Vol.28Issue(9)：2057-2064,8.DOI:10.3866/PKU.WHXB201205251
原位交联杂化型聚合物电解质膜的形成机理、结构模型及其电化学性能
Formation Mechanism, Structure Model and Electrochemical Performance of an In situ Cross Linking Hybrid Polymer Electrolyte Membrane
摘要
Abstract
A Nano-TiO2/poly(citric acid titanium complex-polyethylene glycol)/Lil/l2 crosslinked hybrid polymer electrolyte membrane has been prepared via in-situ polymerization and compositing. Specifically, the method used the synthesized crosslinked network of poly(citric acid titanium complex-polyethylene glycol) containing the Ti(VI) hybrid center as a substrate, the hydrolyzed Nano-TiO2 as fillers and Lil/I2 as conductive ionics. The formation mechanism of the crosslinked hybrid polymer matrix is discussed. A structural model was established with a local density approximation (LDA) method. The influence of Ti(iOPr)4 content on the structure and electrochemical performance of the electrolyte membrane were investigated with Raman spectra, Fourier transform infrared spectra (FTIR), transmission electron microscopy (TEM), and an energy dispersive X-ray analysis (EDXA) technique. It was found that when the Ti(iOPr)4 content was higher than 12% (w), the combined action of Nano-TiO2 particles and the Ti(VI) hybrid center improved not only the room-temperature ionic conductivity (σ), but also the interfacial stability. At 48% (w) Ti(iOPr)4 content, the value of a reached a maximum of 9.72×10～5 S · cm-1 and the interface resistance became stable after 6 d.关键词
聚合物电解质/染料敏化太阳能电池/四异丙氧基钛/离子电导率/界面稳定性Key words
Polymer electrolyte/ Dye-sensitized solar cell/ Titanium tetraisopropoxide/Ionic conductivity/ Interface stability分类
化学化工引用本文复制引用
梁桂杰,钟志成,许杰,徐卫林,陈美华,张增常,李文联..原位交联杂化型聚合物电解质膜的形成机理、结构模型及其电化学性能[J].物理化学学报,2012,28(9):2057-2064,8.基金项目
国家自然科学基金(51003082),教育部科学技术研究重点项目(208089)和湖北省自然科学基金(2011CDC062)资助项目 （51003082）
