项目名称: 基于含N聚合物功能化纳米粒子的离子液体凝胶电解质的研究及其在染料敏化太阳能电池中的应用
项目编号: No.51303186
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 一般工业技术
项目作者: 方艳艳
作者单位: 中国科学院化学研究所
项目金额: 25万元
中文摘要: 研究和开发高稳定性、高性能的准固态电解质是染料敏化太阳能电池发展的一个重要方向,也是电池实业化的必然要求。本项目设计合成一系列适宜分子量的含N官能团聚合物功能化纳米粒子,一方面利用纳米粒子本身的网络结构使离子液体电解质凝胶化,解决离子液体流动性问题,提高电池稳定性;另一方面利用粒子表面引入的特定含N官能团聚合物,富含给电子基团或者具有高电导率、空穴传输性能的链段,起到协同纳米粒子使离子液体凝胶化、改善电池性能的作用。通过研究粒子表面功能化聚合物的基团和链段对电解质微观形貌的影响,揭示离子在电解质中的传输扩散机理,研究纳米复合凝胶电解质的组成、结构对所组装电池的光电性能的影响,获得结构和电池性能间的内在关联,为高稳定性、高效率凝胶染料敏化太阳能电池的制备提供科学的指导。
中文关键词: 功能化纳米粒子;凝胶电解质;含N聚合物;染料敏化太阳能电池;
英文摘要: The study and development of quasi-solid-state electrolyte with high long-time stability and high performance is attracting both academic and industrial interests for dye-sensitized solar cells (DSSCs). In this program, a series of functional nanoparticles with polymers containing N-groups are designed and synthesized. On one hand, the inherent network of nanoparticles is to solidify the nonvolatile ionic-liquid electrolyte, which solves the leakage problems of ionic liquid and improves stability of DSSCs. On the other hand, the polymers with N-groups modified on surface of nanoparticles are rich in electron-donating groups or possess properties like high conductivity and hole transport, which cooperate to solidify ionic liquid with nanoparticles and improve the performance of DSSCs. Through studying the effects of the groups and segments of polymers modified on nanoparitles on the electrolyte micro-morphology, the ion transport diffusion mechanism of the functional nanoparticles composite gel electrolytes is analyzed. By discussing the influence of the electrolyte components and molecular structure of the modifying polymer on the photovoltaic performance of as-prepared DSSCs, the inherent relationship between structure of nanoparticles and the photovoltaic performance of quasi-solid-state DSSCs is achieved. The
英文关键词: functionalized nanoparticles;gel electrolytes;polymer with N-groups;dye-sensitized solar cells;