阳极
电解质
锂(药物)
材料科学
离子
法拉第效率
无机化学
电极
电池(电)
快离子导体
阴极
离子电导率
碳酸乙烯酯
碳酸丙烯酯
化学工程
化学
工程类
医学
物理化学
有机化学
内分泌学
作者
Ziyue Zhang,Tianshi Hu,Qimeng Sun,Yao Shen Chen,Qingxiang Yang,Yueming Li
标识
DOI:10.1016/j.jpowsour.2020.227908
摘要
Abstract It is a great challenge to improve the low temperature electrochemical performance of lithium ion batteries because of the sluggish kinetics at such temperature. In this work, an optimized LiBF4 based electrolyte formulation for TiO2(B) anode in lithium ion battery is designed to heighten the low temperature electrochemical performance. TiO2(B) anode with optimized ratio electrolyte exhibits a reversible capacity as high as ~ 240 mAhg−1 at 0.1 A g−1 at −20 °C. In such optimized electrolyte, TiO2(B) shows excellent electrochemical performance at a low temperature up to −30 °C. It is found that the separation energy of lithium ion and solvents at the optimized formulation accounts for the improved electrochemical performance based on molecular dynamics simulation.
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