电解质
化学
无机化学
电导率
尖晶石
碳酸丙烯酯
离子电导率
分解
锂(药物)
分析化学(期刊)
电阻率和电导率
离子键合
离子
电极
材料科学
物理化学
色谱法
医学
有机化学
内分泌学
工程类
电气工程
冶金
作者
Takayuki Doi,Y. Shimizu,Michihiro Hashinokuchi,Masaaki Inaba
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2016-01-01
卷期号:163 (10): A2211-A2215
被引量:51
摘要
Charge and discharge properties of spinel LiNi0.5Mn1.5O4 positive electrodes were investigated using concentrated LiBF4/propylene carbonate (PC) electrolyte solutions in the range of 0.833 (ca. 1 mol dm−3) to 7.25 (nearly saturated) mol kg−1. The irreversible decomposition of electrolyte solution was effectively suppressed with an increase in concentration. In addition, the polarization in charge/discharge reactions remained small in the nearly saturated 7.25 mol kg−1 LiBF4/PC even though the viscosity was very high and the ionic conductivity was low. The rate capability was higher than that obtained with nearly saturated 4.3 mol kg−1 LiPF6/PC. The structure, viscosity, and ionic conductivity of the concentrated LiBF4/PC were investigated. Based on the experimental results, the rapid charge/discharge reactions at LiNi0.5Mn1.5O4 electrodes were discussed.
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