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首页> 外文期刊>Electroanalysis >Characterization and Electrochemical Properties of P(VdF-co-HFP) Based Electrospun Nanocomposite Fibrous Polymer Electrolyte Membrane for Lithium Battery Applications
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Characterization and Electrochemical Properties of P(VdF-co-HFP) Based Electrospun Nanocomposite Fibrous Polymer Electrolyte Membrane for Lithium Battery Applications

机译：基于P（VdF-co-HFP）的电纺纳米复合纤维聚合物电解质膜在锂电池中的表征与电化学性能

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摘要

Effect of ZnAl_2O_4 nanofillers concentration on the physical and electrochemical properties of electrospun P(VdF-co-HFP) based nanocomposite electrolyte membranes were studied. By optimizing the spinning process parameters, the bead free and an average range (0.5–1.0 μm) of diametered fibrous membranes were developed using an electrospinning technique. The nanocomposite fibrous membrane with 5 wt% ZnAl_2O_4 fillers showed reduction of crystallinity, good thermal stability and smooth morphology were studied by X-ray diffraction, differential scanning calorimetry and scanning electron microscopy techniques. The fibrous P(VdF-co-HFP) copolymer and nanocomposite P(VdF-co-HFP)/ZnAl_2O_4 polymer electrolytes were prepared by soaking the prepared electrospun fibrous membranes in 1 M LiPF_6 in EC: DEC (1:1, v/v) and evaluated the wet-ability properties by electrolyte uptake method. The activated nanocomposite fibrous polymer electrolyte membrane with 5 wt% ZnAl_2O_4 fillers content shows high ionic conductivity of 1.59×10~(-3) Scm~(-1) at room temperature and good electrochemical stability window higher than 4.3 V. Electrochemical performance of Li/PE, NCPE/LiCoO_2 CR 2032 coin cells containing the prepared fibrous polymer electrolyte (PE) and nanocomposite polymer electrolyte (NCPE) membranes with 5 wt% ZnAl_2O_4 filler content is evaluated at current density 0.1 C-rate over the potential range 2.8–4.2 V.
机译：研究了ZnAl_2O_4纳米填料的浓度对电纺P（VdF-co-HFP）基纳米复合电解质膜的物理和电化学性能的影响。通过优化纺丝工艺参数，使用电纺技术开发了无珠粒和直径范围纤维膜的平均范围（0.5–1.0μm）。用X射线衍射，差示扫描量热法和扫描电子显微镜技术研究了含5wt％ZnAl_2O_4填料的纳米复合纤维膜的结晶度降低，良好的热稳定性和平滑的形貌。通过将制备的电纺纤维膜浸入1 M LiPF_6中的EC：DEC（1：1，v / v）中，制备纤维P（VdF-co-HFP）共聚物和纳米复合P（VdF-co-HFP）/ ZnAl_2O_4聚合物电解质），并通过电解质吸收法评估其湿润性能。 ZnAl_2O_4含量为5 wt％的活性纳米复合纤维聚合物电解质膜在室温下显示出1.59×10〜（-3）Scm〜（-1）的高离子电导率和高于4.3 V的良好电化学稳定性窗口.Li的电化学性能/ PE，NCPE / LiCoO_2 CR 2032纽扣电池，其中所制备的纤维聚合物电解质（PE）和纳米复合聚合物电解质（NCPE）膜的ZnAl_2O_4填料含量为5 wt％，在电流密度为0.1 C的速率下，在电位范围2.8–4.2下进行评估V.

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