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 ; P(VDF–HFP) ; Composite polymer electrolyte ; Li-ion battery
• 会议召开时间：2016-10-14
• 会议录名称：第二届湖北省化学化工青年科学家论坛摘要集
• 语种：英文
• 分类号：TB383.4;TM912
• 学会代码：HXGC
• 会议名称：第二届湖北省化学化工青年科学家论坛
• 会议地点：中国湖北武汉
• 主办单位：湖北省化学化工学会
• 学会名称：《化学与生物工程》编辑部
• 页数：1
• 文件大小：645k
• 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. The P(VDF–HFP)-based composite polymer electrolyte(CPE) membrane doped with the 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 m S cm~(-1); and the reciprocal temperature dependence of ionic conductivity of as-prepared CPEs follows VTF relationship. The interfacial resistance of the assembled Li/CPE/Li 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. The P(VDF–HFP)-based composite polymer electrolyte(CPE) membrane doped with the 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 m S cm~(-1); and the reciprocal temperature dependence of ionic conductivity of as-prepared CPEs follows VTF relationship. The interfacial resistance of the assembled Li/CPE/Li 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]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.
    [2]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.