Study on preparation and performance of PVDF-HFP/P(St-MMA)-SiO_2 composite polymer electrolytes
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- 英文论文题名：Study on preparation and performance of PVDF-HFP/P(St-MMA)-SiO_2 composite polymer electrolytes
- 论文作者：Zhiyan Wang ; Wei Xiao ; Chang Miao
- 英文论文作者：Zhiyan Wang ; Wei Xiao ; Chang Miao ; 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：Organic-inorganic hybrid ; Composite polymer electrolyte ; P(VDF-HFP) ; Lithium-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：O631.3
- 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：104k
- 原文格式：D
- 会议级别：地方
摘要
The organic-inorganic hybrid material poly(styrene-methyl methacrylate)-silica(P(St-MMA)-SiO_2) is successfully prepared by in situ polymerization,which is confirmed by FT-IR.The hybrid material is employed to fabricate poly(vinylidene fluoride-hexafluoropropylene)(P(VDF-HFP)) based composite polymer electrolyte(CPE) membrane.The desired CPE is obtained by being immersed into 1.0 mol/L LiPF_6-EC/DMC/EMC electrolyte about 0.5 h.And its structure and properties are characterized by SEM,XRD,AC impedance and charge-discharge cycle testing measurements.The results of SEM indicate the P(St-MMA)-SiO_2 particles are uniformly dispersed into the membrane and the CPE membrane presents homogeneous surface and abundant interconnected micro-pores inner.The results of XRD show that there may exist interaction forces between P(St-MMA)-SiO_2 particles and polymer matrix,which obviously decreases the crystallinity of the composite membrane.Moreover,the ionic conductivity at room temperature and electrochemical working window of the CPE membrane can reach 2.593 mS ·cm~(-1) and 5.2 V,respectively.The assembled LiCoO_2/CPEs/Li coin cell with the CPE showed good charge-discharge performances and C-rate performances,which indicates that P(St-MMA)-SiO_2 hybrid material is a promising additive for P(VDF-HFP) based CPE in the lithium-ion battery fields.
The organic-inorganic hybrid material poly(styrene-methyl methacrylate)-silica(P(St-MMA)-SiO_2) is successfully prepared by in situ polymerization,which is confirmed by FT-IR.The hybrid material is employed to fabricate poly(vinylidene fluoride-hexafluoropropylene)(P(VDF-HFP)) based composite polymer electrolyte(CPE) membrane.The desired CPE is obtained by being immersed into 1.0 mol/L LiPF_6-EC/DMC/EMC electrolyte about 0.5 h.And its structure and properties are characterized by SEM,XRD,AC impedance and charge-discharge cycle testing measurements.The results of SEM indicate the P(St-MMA)-SiO_2 particles are uniformly dispersed into the membrane and the CPE membrane presents homogeneous surface and abundant interconnected micro-pores inner.The results of XRD show that there may exist interaction forces between P(St-MMA)-SiO_2 particles and polymer matrix,which obviously decreases the crystallinity of the composite membrane.Moreover,the ionic conductivity at room temperature and electrochemical working window of the CPE membrane can reach 2.593 mS ·cm~(-1) and 5.2 V,respectively.The assembled LiCoO_2/CPEs/Li coin cell with the CPE showed good charge-discharge performances and C-rate performances,which indicates that P(St-MMA)-SiO_2 hybrid material is a promising additive for P(VDF-HFP) based CPE in the lithium-ion battery fields.
The organic-inorganic hybrid material poly(styrene-methyl methacrylate)-silica(P(St-MMA)-SiO_2) is successfully prepared by in situ polymerization,which is confirmed by FT-IR.The hybrid material is employed to fabricate poly(vinylidene fluoride-hexafluoropropylene)(P(VDF-HFP)) based composite polymer electrolyte(CPE) membrane.The desired CPE is obtained by being immersed into 1.0 mol/L LiPF_6-EC/DMC/EMC electrolyte about 0.5 h.And its structure and properties are characterized by SEM,XRD,AC impedance and charge-discharge cycle testing measurements.The results of SEM indicate the P(St-MMA)-SiO_2 particles are uniformly dispersed into the membrane and the CPE membrane presents homogeneous surface and abundant interconnected micro-pores inner.The results of XRD show that there may exist interaction forces between P(St-MMA)-SiO_2 particles and polymer matrix,which obviously decreases the crystallinity of the composite membrane.Moreover,the ionic conductivity at room temperature and electrochemical working window of the CPE membrane can reach 2.593 mS ·cm~(-1) and 5.2 V,respectively.The assembled LiCoO_2/CPEs/Li coin cell with the CPE showed good charge-discharge performances and C-rate performances,which indicates that P(St-MMA)-SiO_2 hybrid material is a promising additive for P(VDF-HFP) based CPE in the lithium-ion battery fields.
引文
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[5]Lin D,Liu W,Liu Y,et al.High ionic conductivity of composite solid polymer electrolyte via in situ synthesis of monodispersed Si O2 nanospheres in poly(ethylene oxide)[J].Nano Letters,2016,16:459-465.
[2]Kurc B.Composite gel polymer electrolyte with modified silica for Li Mn2O4 positive electrode in lithium-ion battery[J].Electrochimica Acta,2015,190:780-789.
[3]Liao Y H,Chen T T,Luo X Y,et al.Cycling performance improvement of polypropylene supported P(VDF-HFP)/maleic anhydride-grated-polyvinylidene fluoride based gel electrolyte by incorporating nano-Al2O3 for full batteries[J].Journal of Membrane Science,2016,507:126-134.
[4]Seidel S M,Jeschke S,Vettikuzha P,et al.PVDF-HFP/ether-modified polysiloxane membranes obtained via airbrush spraying as active separators for application in lithium ion batteries[J].Chemical Communications,2015,51(60):12048-12051.
[5]Lin D,Liu W,Liu Y,et al.High ionic conductivity of composite solid polymer electrolyte via in situ synthesis of monodispersed Si O2 nanospheres in poly(ethylene oxide)[J].Nano Letters,2016,16:459-465.