静电纺丝和静电喷雾制备PVdF-HFP/Al_2O_3/PVdF-HFP锂离子电池隔膜制备及其电化学性能
详细信息 查看官网全文
- 英文论文题名：Preparation And Electrochemical Characterization Of Pvdf-Hfp/Al_2o_3/Pvdf-Hfp Membrane For LIBs By Electrospinning And Electrospaying
- 论文作者：周锦涛 ; 焦晓宁 ; 于宾 ; 任元林 ; 康卫民
- 英文论文作者：Zhou Jintao ; Jiao Xiaoning ; Yu Bin ; Ren Yuanlin ; Kang Weimin ; School of Textile ; Tianjin Polytechnic University ; Key Laboratory of Advanced Textile Composite ; Ministry of Education of China
- 年：2016
- 作者机构：天津工业大学纺织学院;纺织复合材料教育部重点实验室;
- 论文关键词：静电纺丝 ; 纳米纤维 ; 静电喷雾沉积 ; 锂离子电池 ; 隔膜
- 英文论文关键词：Lithium ion batteries(LIBs) ; gel polymer electrolytes(GPEs) ; electrospun ; electrostatic spray deposition
- 会议召开时间：2016-11-18
- 会议录名称：中国第四届静电纺丝大会（CICE 2016）摘要集
- 语种：中文
- 分类号：TQ340.64;TM912
- 学会代码：ZGNM
- 会议名称：中国第四届静电纺丝大会(CICE 2016)
- 会议地点：中国北京
- 主办单位：中国复合材料学会超细纤维材料分会（筹）
- 学会名称：中关村科创纳米技术创新研究会
- 页数：1
- 文件大小：510k
- 原文格式：D
- 会议级别：全国
摘要
采用静电喷雾沉积技术在两层聚偏氟乙烯-六氟丙烯(PVd F-HFP)静电纺丝纳米纤维之间沉积一层氧化铝(Al_2O_3)微粒,制备出新型具有三明治结构的复合膜(SCM)。考察分析了SCM的表面形貌、耐热收缩性能、电化学性能以及所制备电池的循环充放电性能等。结果表明SCM具有比P(Vd F-HFP)静电纺丝纤维膜(PHM)更高的吸液率,在吸收电解液后更易形成凝胶聚合物电解质(GPEs);在室温下测试得到SCM GPE的离子电导率为1.61 m Scm~(-1),电化学稳定窗口5.4 V;以Li Co O_2作为正极材料,所制备电池的首次放电比容量高达145 m Ahg~(-1)。
A novel sandwiched composite membrane(SCM) was prepared by depositing alumina micro-particles between two layers of electrospun poly(vinylidene fluoride-co-hexafluor-opropylene)(P(Vd F-HFP)) nanofibers through electrostatic spray deposition. The morphologies, thermal shrinkage, electrochemical properties of the separator and battery performance for cells with the SCM were investigated. The results show that SCM has a higher uptake than the pure P(Vd F-HFP) membrane(PHM) electrolyte and easily absorbs electrolyte to form gel polymer electrolytes(GPEs). The ionic conductivity of SCM GPEs is 1.61×10~(-3) Scm~(-1) at room temperature, and the GPE shows a high electrochemical stability potential of 5.4 V. With Li Co CO_2 as cathode, the cell with SCM GPEs exhibits high initial discharge capacity of 145 m Ahg~(-1).
A novel sandwiched composite membrane(SCM) was prepared by depositing alumina micro-particles between two layers of electrospun poly(vinylidene fluoride-co-hexafluor-opropylene)(P(Vd F-HFP)) nanofibers through electrostatic spray deposition. The morphologies, thermal shrinkage, electrochemical properties of the separator and battery performance for cells with the SCM were investigated. The results show that SCM has a higher uptake than the pure P(Vd F-HFP) membrane(PHM) electrolyte and easily absorbs electrolyte to form gel polymer electrolytes(GPEs). The ionic conductivity of SCM GPEs is 1.61×10~(-3) Scm~(-1) at room temperature, and the GPE shows a high electrochemical stability potential of 5.4 V. With Li Co CO_2 as cathode, the cell with SCM GPEs exhibits high initial discharge capacity of 145 m Ahg~(-1).
引文