将三氟甲烷磺酸锂(LiCF3SO3)、碳酸丙烯酯(PC)、聚乙二醇二丙烯酸酯(PEGDA)以及2,2-二甲氧基-2-苯基苯乙酮(DMPAP)混匀后,采用紫外光固化法制备高分子透明凝胶电解质.其中,LiCF3SO3、PC、PEGDA和DMPAP的加入量是影响凝胶电解质电导率的四个主要因素,各因素分别设置5个水平,采用L25(54)正交设计进行试验,以凝胶电解质的电导率作为考察指标.通过极差分析,得出影响电导率的因素顺序为LiCF3SO3>PC>PEGDA>DMPAP,制备试验中LiCF3SO3、PC和PEGDA的最佳质量比为0.3∶3∶1.采用紫外-可见光谱仪、XRD、四探针电导率测定仪分别对凝胶电解质的光透过率、结晶程度和电导率进行了表征.结果表明,所制备的凝胶电解质具有较高的可见光透过率和电导率.通过在水中浸泡及外界自然环境下放置试验,测试表明所制得的凝胶电解质的稳定性较好.
After lithium trifluoromethane sulfonate ( LiCF3 SO3 ) ,propylene carbonate ( PC ) , polyethylene glycol diacrylate (PEGDA ) and 2 ,2-dimethoxy-2-phenylacetophenone (DMPAP) were uniformly mixed ,polymer gel electrolyte was prepared by UV curing of the photopolymerizable electrolyte mixture .Based on L25 (54 ) orthogonal test ,the four main factors influencing the conductivity of gel electrolyte ,such as the addition amount of LiCF3SO3 ,PC ,PEGDA and DMPAP ,were investigated .Each factor was tested at 5 levels .The analysis of range showed that the importance of factors effected on the conductivity were LiCF3SO3 > PC > PEGDA > DMPA The optimum mass ratio of LiCF3 SO3 ,PC and PEGDA was determined as 0 .3:3:1 .P .The visible light transmittance ,crystallization degree and conductivity of gel electrolyte were studied by using UV-vis spectrophotometer ,XRD and four-point probe instrument ,respectively .The results indicated that the prepared gel electrolyte had high visible light