Preparation of spherical-like and honeycomb LiCe_(0.1)Ca_(0.8)TiO_3 and its applications in polymer electrolytes for Li-ion battery

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• 英文论文题名：Preparation of spherical-like and honeycomb LiCe_(0.1)Ca_(0.8)TiO_3 and its applications in polymer electrolytes for Li-ion battery
• 论文作者：Wei Xiao ; Chang Miao ; Xueming Yan ; Ping Mei
• 英文论文作者：Wei Xiao ; Chang Miao ; Xueming Yan ; Ping Mei ; College of Chemistry and Environmental Engineering ; Yangtze University
• 年：2016
• 作者机构：College of Chemistry and Environmental Engineering,Yangtze University;
• 英文论文关键词：LiCe_(0.1)Ca_(0.8)TiO_3 ; Poly(vinylidene fluoride-co-hexafluoropropylene) ; Composite polymer electrolyte ; Li-ion battery
• 会议召开时间：2016-09-23
• 会议录名称：中部四省化学化工学会2016年学术年会摘要集
• 语种：英文
• 分类号：TM912;O614.111
• 学会代码：JXHX
• 会议名称：中部四省化学化工学会2016年学术年会
• 会议地点：中国江西南昌
• 主办单位：中国化学会湖北代表处
• 学会名称：江西省化学化工学会
• 页数：1
• 文件大小：130k
• 原文格式：D
• 会议级别：地方

摘要

The spherical-like and honeycomb LiCe_(0.1)Ca_(0.8)TiO_3 particles are successfully synthesized by sol-gel and spray-drying combined with following pyrolysis processes,which are confirmed by XRD,FT-IR,SEM and TEM.The poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF–HFP)-based composite polymer electrolyte(CPE) membrane doped with LiCe_(0.1)Ca_(0.8)TiO_3 particle was prepared by phase inversion method and the desirable CPE was obtained after being activated in liquid electrolyte.The physicochemical properties of the CPE were characterized by SEM,XRD,TG,and electrochemical measurements.The results show that the CPE membrane presents uniform surface with abundant interconnected micro-pores and possesses excellent mechanical performance with high decomposition temperature about 450 ℃;and adding LiCe_(0.1)Ca_(0.8)TiO_3 particle into matrix can remarkably decrease the crystallinity but enhance ionic conductivity at room temperature of the CPE membrane about 4.021 mS cm~(-1);and the reciprocal temperature dependence of ionic conductivity of as-prepared CPEs follows Vogel-Tamman-Fulcher relationship.The interfacial resistance of the assembled Li/CPE/Li simulated cell can rapidly increase to a steady value of about 835 ? cm~(-1) from the initial value of about 685 ? cm~(-1) at 30 ℃ during 15 days storage at room temperature.The battery performance test suggests that the CPE also shows excellent compatible properties with commercial LiCoO_2 and graphite materials.
The spherical-like and honeycomb LiCe_(0.1)Ca_(0.8)TiO_3 particles are successfully synthesized by sol-gel and spray-drying combined with following pyrolysis processes,which are confirmed by XRD,FT-IR,SEM and TEM.The poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF–HFP)-based composite polymer electrolyte(CPE) membrane doped with LiCe_(0.1)Ca_(0.8)TiO_3 particle was prepared by phase inversion method and the desirable CPE was obtained after being activated in liquid electrolyte.The physicochemical properties of the CPE were characterized by SEM,XRD,TG,and electrochemical measurements.The results show that the CPE membrane presents uniform surface with abundant interconnected micro-pores and possesses excellent mechanical performance with high decomposition temperature about 450 ℃;and adding LiCe_(0.1)Ca_(0.8)TiO_3 particle into matrix can remarkably decrease the crystallinity but enhance ionic conductivity at room temperature of the CPE membrane about 4.021 mS cm~(-1);and the reciprocal temperature dependence of ionic conductivity of as-prepared CPEs follows Vogel-Tamman-Fulcher relationship.The interfacial resistance of the assembled Li/CPE/Li simulated cell can rapidly increase to a steady value of about 835 ? cm~(-1) from the initial value of about 685 ? cm~(-1) at 30 ℃ during 15 days storage at room temperature.The battery performance test suggests that the CPE also shows excellent compatible properties with commercial LiCoO_2 and graphite materials.

引文

[1]Goodenough J B,Park K S.The Li-ion rechargeable battery:A perspective[J].Journal of the American Chemical Society,2013,135(4):1167-1176.
    [2]Tan G,Wu F,Zhan C,et al.Solid-state Li-Ion batteries using fast,stable,glassy nanocomposite electrolytes for good safety and long cycle-life[J].Nano letters,2016,16(3):1960-1968.
    [3]Osada I,de Vries H,Scrosati B,et al.Ionic-liquid-based polymer electrolytes for battery applications[J].Angewandte Chemie International Edition,2016,55(2):500-513.
    [4]Li M,Wang X,Wang Y,et al.A gel polymer electrolyte based on composite of nonwoven fabric and methyl cellulose with good performance for lithium ion batteries[J].RSC Advances,2015,5(65):52382-52387.
    [5]Xu K.Electrolytes and interphases in Li-ion batteries and beyond[J].Chemical reviews,2014,114(23):11503-11618.