高分子透明凝胶电解质的制备与表征 毕业设计.doc

本科毕业设计(论文) 题目：高分子透明凝胶电解质的制备与表征 院 （系）： 材料与化工学院 专 业： 高分子材料与工程 班 级： 090310 学 生： 学 号： 090310113 指导教师： 201年6月 高分子透明凝胶电解质的制备与表征 摘 要 由于高分子凝胶电解质同时具有高分子水溶液和电解质的性质，可以起到固体电解质与液体电解质的双重性能，因此在电池领域中起到隔板与电解质的双重作用，从而在锂离子电池、太阳能电池以及各类电致变色器件中被广泛的应用。 本论文主要以碳酸烯酯（C）三氟甲磺酸锂（LiCF3SO3）、碳酸丙烯酯（PC）、聚乙二醇二丙烯酸酯（PEGDA）、以及光固化剂DMPAP通过紫外光固化，采用类“浇铸”技术从而制备凝胶凝胶电解质。用红外光谱测试凝胶电解质样品组份、紫外光谱图对凝胶电解质的光透射率进行表征、XRD对凝胶电解质的结晶程度进行表征、四探针电导仪表征凝胶电解质的导电性。 关键词：凝胶电解质；紫外光固化；类“浇铸”技术 Preparation and characterization of polymer gel electrolyte ABSTRACT Polymer gel electrolytes possess the properties of solid and liquid electrolyte, can play a dual role of separator and electrolyte in the battery field. So it is widely used in a lithium ion battery, solar battery and various electrochromic devices. In this paper, we mainly used lithium trifluoromethane sulfonate (LITRIF), propylene carbonate (PC), polyethylene glycol diacrylate (PEGDA), and UV light curing agent DMPAP to prepare the gel electrolyte using the casting technology. The composition, light transmittance, crystallinity and conductivity of gel electrolyte samples were characterized by infrared and UV-vis spectra, XRD and four probe electric conductivity meter. Through the conductivity testing of polymer gel electrolyte in different conditions, its stability after being dropped in water or UV aging and being placed in the natural environment was studied. The results showed the conductivity of gel electrolyte changed in a narrow range, and reached 1.5 S/cm under the above conditions. The electrochromic devices prepared with gel electrolyte and polyaniline presented obvious discoloration under 1~1.5 voltage. Keywords: Gel electrolyte; ultraviolet light polymerization; casting technology; electrochromism 目录 摘 要 I ABSTRACT II 目录 III 1 绪论 1 1.1 前言 1 1.2 凝胶电解质的组成 2 1.2.1聚合物 2 1.2.2增塑剂 3 1.2.3锂盐 3 1.3凝胶电解质的性能 4 1.4凝胶电解质的导电机理 5 1.5凝胶电解质种类 7 1.5.1聚氧化乙烯体系 7 1.5.2聚丙烯腈体系 7 1.5.3聚甲基丙烯酸甲酯体系 8 1.5.4聚偏氟