新型锂离子固体电解质正式版.docVIP专享VIP免费

摘要近年来，无机氧化物固体电解质以其安全性，较高的离子电导率吸引许多研究者的兴趣。本论文介绍了近年固体电解质的研究进展，本实验方法选用多数无机氧化物固体电解质的合成方法—传统固相合成法，在空气环境条件下合成Li2O-ZrO2-SiO2体系的无机固体电解质，通过X射线衍射鉴定从980℃到1060℃（每隔20℃）不同烧结温度下本体系无机固体电解质多晶态物相，应用电化学工作站测定AC阻抗，计算不同烧结温度下离子电导率，还测试了电解质片的收缩率，并采用阿基米德排水法测试固体电解质片的密度。阻抗结果显示这种材料在1000℃的烧结温度下，显示了最大的锂离子电导率2.6651×10-3Ω-1cm，收缩率和密度有较好的一致性，烧结温度在1020℃后密度稍微有些降低。比较其他无机氧化物电解质，本体系烧结温度较低，同时获得了较高的锂离子电导率，丰富了无机氧化物电解质体系。关键词：固体电解质；LZSO（Li2O-ZrO2-SiO2）；锂离子电导率AbstaractInrecentyears,inorganicoxidesolidelectrolytehasattractedmanyresearchersinterestsforitssafety,highionicconductivity.Thispaperdescribesresearchprogressofsolidelectrolytesinrecentyears,mostoftheexperimentalmethodusedinthesynthesisofinorganicoxidesolidelectrolytemethod-traditionalsolid-statesynthesis,synthesisinairconditionsystemLi2O-ZrO2-SiO2inorganicsolidelectrolyte,byusingtheX-raydiffractionidentifiedfromthe980℃to1060℃(every20℃)underdifferentsinteringtemperatureofthesystemofmulti-crystallineinorganicsolidelectrolyte,ACimpedancemeasuredinairatroomtemperaturebyelectrochemicalwork-station,calculatedindifferentsinteringtemperaturelithiumionconductivity,alsotestedshrinkageratioofthesolidelectrolytepellets,andmeasuredbulkdensityofsolidelectrolytepelletsusingArchimedesmethod.Impedanceresultsshowedthatthematerialinthesinteringtemperatureof1000℃,showedthelargestlithium-ionconductivity2.6651×10-3Ω-1cm,theshrinkageratioandbulkdensityareingoodagreement,after1020℃sinteringtemperatureslightlylowerdensity.Comparedwithotherinorganicoxideelectrolytesinteringtemperatureofthesystemislower,whileaccesstoahighlithiumionconductivityandenrichedinorganicoxideelectrolytesystem.Keywords：solidelectrolyte；Li2O-ZrO2-SiO2；lithiumionconductivity目录引言......................................................................................................................-1-第一章文献综述...........................................................................-2-1.1锂电池发展概述...........................................................-2-1.1.1采用锂负极的金属锂电池(LB)...........-2-1.1.2采用插锂化合物的液态锂离子电池(LIB)..................................................................................................-3-1.1.3采用聚合物电解质的聚合物锂离子电池(PLIB)..................................................................................-4-1.1.4采用全固态技术的锂离子电池-5-1.2固体电解质...........................................................................-6-1.2.1固体电解质的发展历史.......................-7-1.2.2著名固体电解质的研究现状.......-8-1.2.3固体电解质的研究手段...................-11-第二章实验部分.......................................................................-13-2.1原料设备及研究方法.......................................-13-2.2主要仪器设备：.......................................................-14-2.2.1X-射线衍射分析...............................................-14-2.2.2交流阻抗分析...................................................-14-2.2.3压力设备.................................................