首页> 外文会议>International Conference on Materials and Intelligent Manufacturing >Lithium Salt Doped Poly(Vinylidene Fluoride)/CelMose Acetate Composite Gel Electrolyte Membrane for Lithium Ion Battery
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Lithium Salt Doped Poly(Vinylidene Fluoride)/CelMose Acetate Composite Gel Electrolyte Membrane for Lithium Ion Battery

机译:用于锂离子电池的锂盐掺杂聚(偏二氟乙烯)/蜂酸醋酸纤维复合凝胶电解质膜

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In this study,composite gel electrolyte based on Polyvinylidene fluoride(PVDF)/ceIlulose acetate with the addition of different proportions of lithium nitrate(LiN03)is prepared by a simple casting method.Salt doping effects on gel electrolyte membrane is investigated by scanning electron microscopy,X-ray analysis,DSC,FT-IR and TGA analysis.Salt doped gel electrolyte membrane shows a porous structure with a high uptake of 150%.Furthermore,with the addition of 20 wt% salt in the gel electrolyte membrane increase the ion conductivity from 0.21×10~(-3)S cm~(-1)to 3.0×10~(-3)S cm~(-1)at room temperature after soaking 1M LiPF6 EC/DEC liquid electrolyte.As compared with PP 2325 separator,pristine PVDF and PVDF/cellulose acetate gel electrolyte membrane,the salt doped PVDF/cellulose acetate membranes exhibit wide electrochemical window and lower interfacial resistance.Composite gel electrolyte membrane with 10 wt% salt contents possess 100% capacity retention after 100 cycles at 1C rate as compared to PP 2325 separator which shows only 87% capacity retention.
机译:在该研究中,通过简单的铸造方法制备基于聚偏二氟乙烯(PVDF)/天丝乙酸乙酸锂的复合凝胶电解质。通过扫描电子显微镜研究了对凝胶电解质膜的掺杂作用,X射线分析,DSC,FT-IR和TGA分析。掺杂掺杂的凝胶电解质膜显示出具有150%的高吸收的多孔结构。加入20wt%凝胶电解质膜中的盐增加了离子在浸泡1M lipf6 EC / DEC液体电解质后,在室温下从0.21×10〜(-3)Scm〜(-1)到3.0×10〜(-3)Scm〜(-1)的电导率。与PP相比2325分离器,原始PVDF和PVDF /纤维素乙酸凝胶电解质膜,盐掺杂PVDF /纤维素乙酸酯膜表现出宽的电化学窗口和下界面抗性。具有10wt%盐含量的10wt%凝胶电解质膜在100次循环后具有100%容量保留。 1C速率为COM PP 2325分离器仅显示87%的容量保留。

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