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首页> 外文期刊>Journal of power sources >Structural and electrochemical properties of micro-porous polymer blend electrolytes based on PVdP-co-HFP-PAN for Li-ion battery applications
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Structural and electrochemical properties of micro-porous polymer blend electrolytes based on PVdP-co-HFP-PAN for Li-ion battery applications

机译：基于PVdP-co-HFP-PAN的微孔聚合物共混电解质的结构和电化学性能，用于锂离子电池

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摘要

A micro-porous polymer blend electrolyte based on polyvinylidene fluoride-co-hexa fluoropropylene (PVdF-co-HFP) and polyacrylonitrile (PAN) was prepared by phase inversion technique with different compositions. The ionic conductivity of micro-porous polymer blend electrolyte films were studied by varying the PAN content in the (PVdF-co-HFP) matrix. It was observed that the ionic conductivity of micro-porous polymer blend electrolyte increases with increase in PAN content. The effect of lithium salt concentrations was studied for the micro-porous polymer blend electrolyte by measuring the conductivity at different temperatures in the range of 301-353 K. The micro-porous polymer blend electrolyte was subjected to XRD, SEM and TG/DTA analysis to determine the amorphosity nature, surface morphology and thermal stability of the polymer electrolyte, respectively. Linear sweep voltammetry and dc-polarization studies were also performed to find the stability and lithium transference number of micro-porous polymer blend electrolyte, respectively. Finally, charge-discharse studies were carried out in an assembled cell with carbon anode and LiSr_(0.25)Mn_(1.75)O_4 cathode and micro-porous polymer blend electrolyteln between the above electrodes.
机译：通过相转化技术制备了聚偏二氟乙烯-共-六氟丙烯（PVdF-co-HFP）和聚丙烯腈（PAN）为基的微孔聚合物共混电解质。通过改变（PVdF-co-HFP）基质中的PAN含量，研究了微孔聚合物共混物电解质膜的离子电导率。观察到，微孔聚合物共混物电解质的离子电导率随PAN含量的增加而增加。通过在301-353 K范围内在不同温度下测量电导率，研究了锂盐浓度对微孔聚合物共混物电解质的影响。对微孔聚合物共混物电解质进行了XRD，SEM和TG / DTA分析分别测定聚合物电解质的非晶性，表面形态和热稳定性。还进行了线性扫描伏安法和直流极化研究，以分别找到微孔聚合物共混电解质的稳定性和锂转移数。最后，在具有碳阳极和LiSr_（0.25）Mn_（1.75）O_4阴极以及上述电极之间的微孔聚合物共混电解质的组装电池中进行了充放电研究。

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