Determination of anions in lithium-ion batteries electrolyte by ion chromatography

• 作 者: Bin-He Zhu Cheng-Zhu Ni Na-Ni Wang Xun-Yan Zhao Wei-Qiang Guo Pei-Min Zhang Jia-Jie Zhang Su-Qing Chen Wei-De Lv Yan Zhu
• 机 构: Department of Chemistry, Xixi Campus, Zhejiang University,Department of Medicine, Zhejiang Academy o
• 出 处: Chinese Chemical Letters
• 发表日期: 2016年06期
• 关键词: lithium electrolyte satisfactory salts acetonitrile retention linearity Hangzhou

A sensitive and accurate method based on ion chromatography was established for determination of five lithium salts in lithium-ion batteries electrolytes. Chromatographic analyses were carried out on an anion exchange column at flow rate of 1 m L/min. Under the optimal conditions, five target anions(BF_4~-,PF_6~-, TFSI~-, BOB~-and FSI~-) exhibited satisfactory linearity with a correlation coefficient of 0.9996. The relative standard derivations of the target anions were less than less than 0.94%(n = 7). The limits of detections were in the range of 0.068–0.29 mg/L with average spiked recoveries ranging from 96.8% to 105.1%.

A sensitive and accurate method based on ion chromatography was established for determination of five lithium salts in lithium-ion batteries electrolytes. Chromatographic analyzes were carried out on an anion exchange column at flow rate of 1 m L / min. Under the optimal conditions, five The relative standard derivations of the target anions were less than less than 0.94% (n-1), and the target anions (BF_4 ~ -, PF_6 ~ -, TFSI ~ -, BOB ~ -and FSI ~ = 7). The limits of detections were in the range of 0.068-0.29 mg / L with average spiked recoveries ranging from 96.8% to 105.1%.