摘要
本文在２５℃的温度下，对碳酸乙烯脂－丙烯腈（ＥＣ－ＡＮ）和碳酸乙烯脂－碳酸丙烯脂（ＥＣ－ＰＣ）两种近似于等摩尔的混合溶剂的密度ｄ，粘度η，介电常数ε，以及对ＬｉＡｓＦ６在其溶液中的电导进行了测定．并用ＦＪＣＨＥＮ方程进行分析，计算出ＬｉＡｓＦ６在较稀溶液中的离解度ｒ，平均活度系数ｆ±，极限摩尔电导Λ０，离子对缔合常数ＫＡ和距离参数Ｒ；用半经验的Ｃａｓｔｅｅｌ－Ａｍｉｓ方程进行分析，由最小二乘法得到ＬｉＡｓＦ６溶液的方程参数Ｃｍａｘ，ｍａｘ，ａ和ｂ．
The values of density d, viscosity coefficient η,dielectric constant ε,of equimolar EC-AN and EC-PC, the spicific conductance of LiAsF6 in its solution are determined at 25℃. The dissolvability r, the average activity coefficient f±, the limiting molar conductivity Λ0 the ion pair association constant KA and the distance parameter R in diluted solusion are analysed and calculated by FJCHEN equation. The Concentrated solutions is analysed by semi-experiential equation Casteel-Amis, the equation parameter Cmax, max,a and b of LiAsF6solution are obtained by method of least squares.
关键词
锂电池
电解质溶液
电导
非水溶液
Lithium batteriy
Non-aqueovs electrolytic solution
Conductance
