锌空电池中离子液晶电解质的制备与性能研究  

Preparation and Performance of High-performance Ionic Liquid Electrolyte for Zinc Air Battery

作　　者：邓世涛 周杰 Deng Shitao;Zhou Jie(School of Chemical Engineering,Sichuan University,Chengdu 610065,Sichuan,China)

机构地区：[1]四川大学化学工程学院,四川成都610065

出　　处：《四川化工》2021年第6期21-24,共4页Sichuan Chemical Industry

摘　　要：液晶是一种特殊的相态,其兼具分子的流动性和有序性,流动性低且具有良好的可塑性。采用液晶作为电解质能有效地降低电池的封装难度、提高其安全性能,并能解决流动电解质造成的泄漏等问题。本文利用离子取代反应制备了[C14MIm][OH],并通过物理共混引入适量KOH溶液(50%-70%对应液晶质量比),得到了溶致型离子液晶,为锌空气电池构建了高性能的固态液晶电解质。偏光显微镜下显示混合物在室温到45℃区间内仍然保有液晶层状相特性,室温下随着质量混合比变化离子传导能力介于5.89×10^(-3)S/cm到2.59×10^(-2)S/cm之间。所得溶致液晶离子传导性能受温度影响较小且稳定性较好,具备一定的实用性,有作为电解质继续测试改进的价值。Liquid crystal is a special phase state,which has both molecular fluidity and molecular order,low fluidity and good plasticity.Using liquid crystal as electrolyte can effectively reduce the difficulty of battery packaging,improve its safety performance,and solve the leakage problems caused by flowing electrolyte.In this paper,[C14MIm][OH]is prepared by ion substitution reaction,and an appropriate amount of KOH solution(50%-70%corresponding to the mass ratio of liquid crystal)is introduced by physical blending to obtain lyotropic ionic liquid crystal,which is a high-performance solid liquid crystal electrolyte of zinc-air battery.Polarizing microscope shows that the mixture still retains the characteristics of lamellar phase in the range of room temperature to 45℃,and the ion conductivity varies with the mass mixing ratio at room temperature between 5.89×10^(-3)S/cm to 2.59×10^(-2)S/cm.The ion conductivity of the obtained lyotropic liquid crystal is less affected by temperature and has good stability,has certain practicability,and has the value of continuous testing and improvement as an electrolyte.

关 键 词：溶致液晶 固态电解质 层状相 锌空气电池 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]