无机盐工业

无机盐工业 ›› 2020, Vol. 52 ›› Issue (9): 6-8.doi: 10.11962/1006-4990.2019-0524

• 综述与专论 • 上一篇    下一篇

废旧磷酸铁锂电池正极材料固相法再生研究进展

刘佩文1,3,4(),董鹏2,3,4,孟奇2,3,4(),杨轩1,3,4,周思源1,3,4   

  1. 1.昆明理工大学材料科学与工程学院,云南昆明650093
    2.昆明理工大学冶金与能源工程学院
    3.锂离子电池及材料制备技术国家地方联合工程实验室
    4.云南省先进电池材料重点实验室
  • 收稿日期:2020-03-22 出版日期:2020-09-10 发布日期:2020-09-27
  • 通讯作者: 孟奇
  • 作者简介:刘佩文(1996— ),男,硕士研究生,锂离子电池材料及回收利用;E-mail: 1666705921@qq.com
  • 基金资助:
    国家自然科学基金项目(51764029);云南省应用基础研究计划项目(2018FB087);国家重点研发计划项目(2019YFC1803501);云南省教育厅科学研究基金项目(2020J0070)

Research development of solid phase regeneration of cathode material of spent lithium iron phosphate batteries

Liu Peiwen1,3,4(),Dong Peng2,3,4,Meng Qi2,3,4(),Yang Xuan1,3,4,Zhou Siyuan1,3,4   

  1. 1. Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China
    2. Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology
    3. National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology
    4. Key Laboratory of Advanced Battery Materials of Yunnan Province
  • Received:2020-03-22 Online:2020-09-10 Published:2020-09-27
  • Contact: Meng Qi

摘要:

新能源汽车的发展带动了锂离子动力电池产销量的增长,其中磷酸铁锂电池(LFPBs)占有较大的市场份额。由于锂离子电池寿命有限,废旧LFPBs数量逐年增加,其含有丰富的金属资源,也存在环境危害,因此开展废旧LFPBs回收研究具有经济效益和环境效益。固相法再生是废旧LFPBs回收的主流方案,为此综述了废旧LFPBs固相法再生的方法,包括无氧化预处理再生和氧化预处理再生,并对比了各种方法的优缺点。无氧化预处理再生法可制备具有良好晶型的正极材料;氧化预处理再生法可控制再生正极材料的含碳量,有助于进一步提升LFPBs的电化学性能。

关键词: 废旧磷酸铁锂, 正极材料, 再生, 固相法

Abstract:

The development of new energy vehicles has led to the growth of production and sales of lithium-ion power batteries,among which lithium iron phosphate batteries(LFPBs) have a large market share.Due to the limited lifs of lithium-ion battery,the number of waste LFPBs is increasing year by year.It contains abundant metal resources and also has environmental hazards.Therefore,it has economic and environmental benefits to carry out research on waste LFPBs recovery.Solid phase regeneration is the mainstream scheme of waste LFPBs recovery.The methods of solid phase regeneration for waste LFPBs recovery,such as non-oxidation pretreatment regeneration and oxidation pretreatment regeneration,were summarized.The advantages and disadvantages of each method were compared.The regeneration method without oxidation pretreatment can prepare cathode materials with good crystalline phase.The regeneration method with oxidation pretreatment can control the carbon content of regenerated cathode materials and further improve the discharge capacity of LFPBs.

Key words: spent lithium iron phosphate, cathode material, regeneration, solid phase method

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