期刊
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷 23, 期 8, 页码 2401-2409出版社
SPRINGER
DOI: 10.1007/s10008-019-04348-9
关键词
Nanocomposite gel polymer electrolyte; Nanoparticle dispersion; Ionic conductivity; Sodium ion transport; Sodium battery
资金
- Science and Engineering Research Board, a statutory body of the Department of Science and Technology, Government of India [YSS/2015/001234]
In the present work, the effect of dispersion of Al2O3 nanoparticles on ionic conductivity of non-aqueous PVdF-HFP/PMMA blend-based nanocomposite gel polymer electrolyte system comprising liquid electrolyte of sodium trifluoromethanesulfonate is investigated. The ionic conductivity of the electrolyte increases maximum to similar to 1.5 x 10(-3) S cm(-1) for the composition with 6 wt% Al2O3 nanoparticles. The optimized composition retains Vogel-Tamman-Fulcher (VTF) behavior in the temperature range from - 50 to 95 degrees C. The scanning electron micrography and x-ray diffraction studies reveal the uniform dispersion of Al2O3 nanoparticles in the porous structure of the nanocomposite gel polymer electrolyte and enhanced amorphicity of polymer matrix. The optimized electrolyte composition owns a sufficiently large electrochemical stability window of similar to 3.6 V with good sodium ion transference number. The optimized electrolyte is used in a prototype sodium battery cell, which shows an open circuit potential of similar to 2.5 V and first discharge capacity similar to 400 mA h g(-1) followed by a capacity decline with cycling.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据