废旧动力锂离子电池LiFePO_4正极材料的再利用

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英文篇名：Reuse of LiFePO_4 cathode material from spent power Li-ion battery 作者：吕志 ; 徐涛 ; 王洋 ; 赵煜娟 英文作者：LV Zhi;XU Tao;WANG Yang;ZHAO Yu-Juan;Beijing Key Laboratory for Green Catalysis and Separation,College of Environmental and Energy Engineering,Beijing University of Technology;Collaborative Innovation Center of Electric Vehicles in Beijing; 关键词：锂离子电池 ; 废旧LiFePO_4正极材料 ; 溶解法 ; 热处理 英文关键词：Li-ion battery;;spent LiFePO_4 cathode material;;solvent method;;heat treatment 中文刊名：电池 英文刊名：Battery Bimonthly 机构：北京工业大学环境与能源工程学院绿色催化与分离重点实验室;北京电动车辆协同创新中心; 出版日期：2019-04-25 出版单位：电池 年：2019 期：02 基金：国家自然科学基金(11005012201301);; 北京市属高校高水平教师队伍建设支持计划(IDHT20180504) 语种：中文; 页：83-87 页数：5 CN：43-1129/TM ISSN：1001-1579 分类号：X705

摘要

通过热处理法和溶解法,对废旧动力锂离子电池电极活性物质磷酸铁锂(LiFePO_4)进行处理。与700℃热处理再生的材料相比较,经350℃热处理的活性物质在结晶度、首次充放电和循环稳定性等方面表现较好。经350℃热处理的LiFePO_4,以0. 2C在2. 0～4. 2V循环,首次放电比容量达120 mAh/g,第40次循环的比容量为130 mAh/g,库仑效率保持在99%。
        The waste electrode materials were investigated by the heat treatment method and solvent method for recycling. Compared with the regenerated materials calcined at 700 ℃,the active materials treated at 350 ℃ exhibited better electrochemical performance in crystallinity,initial charge-discharge and cycle stability. The initial specific discharge capacity of recycled LiFePO_4 was 120 m Ah/g calcined at 350 ℃ and reached 130 m Ah/g after 40 cycles at 0. 2 C in 2. 0-4. 2 V and the Coulombic efficiency was still 99%.

引文

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