主办:陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊:1976年

汽车实用技术 ›› 2024, Vol. 49 ›› Issue (23): 11-15.DOI: 10.16638/j.cnki.1671-7988.2024.023.003

• 新能源汽车 • 上一篇    

乳酸基低共熔溶剂浸出废旧 LiFePO4动力电池 正极材料金属离子的研究

袁彰 1,金建交*1,吴良芹 1,张晨韵 2   

  1. 1.沙洲职业工学院 智能制造学院;2.无锡工艺职业技术学院 陶瓷学院
  • 发布日期:2024-12-05
  • 通讯作者: 金建交
  • 作者简介:袁彰(2004-),男,研究方向为新能源汽车动力系统及零部件,E-mail:1660836225@qq.com 通信作者:金建交(1981-),男,博士,高级工程师,研究方向为汽车动力系统及零部件,E-mail:502150947@qq.com
  • 基金资助:
    江苏省职业院校学生创新创业培育计划项目(G-2023-1362);江苏省高等学校自然科学面上研究项目 (22KJB150042);江苏省教育规划课题青年专项(C/2022/01/48)

Research on Leaching Metal-ions from Spent LiFePO4 Battery Positive Electrode Materials Using Lactic Acid-Based Deep Eutectic Solvents

YUAN Zhang1 , JIN Jianjiao*1 , WU Liangqin1 , ZHANG Chenyun2   

  1. 1.Intelligent Manufacturing College, Shazhou Professional Institute of Technology;2.Ceramic Institute, Wuxi Vocational Institute of Arts & Technology
  • Published:2024-12-05
  • Contact: JIN Jianjiao

摘要: 低共熔溶剂作为一种新型的绿色溶剂,在化学、生物、材料等领域展现出广泛的应用 前景。文章以废旧磷酸铁锂电池正极材料为对象,研究了氯化胆碱(ChCl)、乳酸(LA)和 H2O 制备的低共熔溶剂对其金属离子的浸出效果。探索了 ChCl/LA 摩尔比、固液比、浸出温 度及时间等因素对正极材料中锂和铁的浸出效果。研究结果表明在最佳浸出因子为 ChCl/LA 摩尔比 1:3、固液比 1:100、浸出温度 140 ℃、浸出时间 8 h 的条件下,锂和铁的浸出率分别 可达 92.98%和 94.57%。

关键词: 废旧 LiFePO4 电池;正极材料;低共熔溶剂;浸出率

Abstract: Deep eutectic solvents, as a new type of green solvent, have shown wide application prospects various fields such as chemistry, biology and material. This study focuses on the positive electrode material of spent lithium-iron phosphate batteries and investigated the leaching effect of metal ions using a deep eutectic solvent prepared with choline chloride (ChCl), lactic acid (LA), and H2O. The leaching effect Li and Fe in the positive electrode was explored by factors such as ChCl/LA molar ratio, solid-liquid ratio, leaching temperature and time. The research results show that under the optimal leaching conditions of ChCl/LA molar ratio of 1:3, solid-liquid ratio of 1:100, leaching temperature of 140 ℃, and leaching time of 8 h, the leaching rates of Li and Fe reached 92.98% and 94.57%, respectively

Key words: spent LiFePO4 batteries; positive electrode material; deep eutectic solvent; Leaching rate