材料工程2018，Vol.46Issue(3)：1-6,6.DOI:10.11868/j.issn.1001-4381.2017.000934
静电纺丝与静电喷雾技术共纺制备PPESK/PVDF复合锂电池隔膜
PPESK/PVDF Lithium-ion Battery Composite Separators Fabricated by Combination of Electrospinning and Electrospraying Techniques
摘要
Abstract
In order to improve the mechanical property of traditional electrospinning fibrous membranes,PPESK-fiber/PVDF-bead composite membranes were prepared via simultaneously electrospinning of PPESK concentrated solution and electrospraying of PVDF dilute solution,and then hot pressed at 160C.The membrane structure,tensile strength,ionic conductivity and cycling performance of lithium-ion batteries were measured by scanning electron microscope,universal tensile test machine,electrochemical work station and battery cycle system.The results show that the hotpressed PPESK/PVDF composite membrane separator exhibits excellent liquid electrolyte wettability,ionic conductivity reaches 1.92mS · cm-1 at room temperature,PVDF beads are uniformly dispersed in PPESK fibers.The interfacial strength of PPESK fibers is effectively enhanced due to the melt of PVDF beads during the hot press process,hence the mechanical strength of composite membrane is leached 13.2MPa.In addition,cells assembled with PPESK/PVDF composite membrane show high discharge capacity and stable cycling performances.关键词
静电纺丝/静电喷雾/聚芳醚砜酮/隔膜/力学性能Key words
electrospinning/electrospraying/poly(phthalazinone ether sulfone ketone)/membrane separator/mechanical property分类
化学化工引用本文复制引用
龚文正,周晶晶,阮诗伦,申长雨..静电纺丝与静电喷雾技术共纺制备PPESK/PVDF复合锂电池隔膜[J].材料工程,2018,46(3):1-6,6.基金项目
国家自然科学基金重点项目(11432003) （11432003）
