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Citation: LI Hui-Fang, GAO Jun-Kui, ZHANG Shao-Li. Ion Chromatographic Determination of LiPF₆ in Electrolyte Solution for Lithium-Ion Batteries[J]. Chinese Journal of Applied Chemistry, ;2007, 24(5): 602-604. shu

Ion Chromatographic Determination of LiPF₆ in Electrolyte Solution for Lithium-Ion Batteries

1.
Tianjin Lishen Battery Joint-Stock Co.Ltd., Tianjin 300384

Corresponding author: LI Hui-Fang,
Received Date: 7 June 2006
Available Online: 20 September 2006

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 PO₄^3- were both higher than 100%,and the relative error for the concentration of LiPF₆ calculated from PO₄^3- was 1.2%,showing a high quantitative accuracy.
- ion chromatography,
- electrolyte,
- lithium hexafluorophosphate,
- chloronitric acid
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沈阳化工大学材料科学与工程学院沈阳 110142

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Ion Chromatographic Determination of LiPF₆ in Electrolyte Solution for Lithium-Ion Batteries