锂离子电池电解液中六氟磷酸锂浓度的离子色谱测定法  

Ion Chromatographic Determination of LiPF_6 in Electrolyte Solution for Lithium-Ion Batteries

作　　者：李慧芳[1] 高俊奎[1] 张绍丽[1] 

机构地区：[1]天津力神电池股份有限公司,天津300384

出　　处：《应用化学》2007年第5期602-604,共3页Chinese Journal of Applied Chemistry

摘　　要：用离子色谱法测试锂离子电池电解液中的电解质(LiPF6)浓度,通过一系列条件实验确定了最佳前处理方式:选择逆王水作为分解处理剂;其用量与电解液等体积;作用时间在12 h以上,结果表明,F-和PO43-的回收率均达到100%以上,且根据PO3-计算得到的LiPF浓度相对误差为1.2%,具有较高的定量准确度。Ion chromatography was applied to determine the concentration of LiPF6 in the electrolyte solution for lithium-ion batteries. The optimal pretreatment parameters were confirmed through a series of experiments ：chloronitric acid（ 1：3 ） was found to be the most effective decomposer for the electrolyte solution, when its volume was equal to that of the electrolyte solution. The preferred reaction time was not less than 12 hours. The recovery rates of F^- and PO^3-4 were both higher than 100%, and the relative error for the concentration of LiPF6 calculated from PO^3-4 was 1.2%, showing a high quantitative accuracy.

关 键 词：离子色谱法 电解液 六氟磷酸锂 逆王水 

分 类 号：O657.7[理学—分析化学]