废旧锂离子电池中Li,Fe和V的回收及xLiFePO_4-yLi_3V_2(PO_4)_3的制备

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英文篇名：Recovery of Li, Fe and V from Spent Lithium Ion Batteries and Preparation of xLiFePO_4-yLi_3V_2(PO_4)_3 作者：郑茹娟 ; 刘元龙 ; 马全新 ; 穆德颖 ; 李如宏 ; 戴长松 英文作者：Zheng Rujuan;Liu Yuanlong;Ma Quanxin;Mu Deying;Li Ruhong;Dai Changsong;Harbin Institute of Technology;Qiqihar University; 关键词：废旧锂离子电池 ; LiFePO_4 ; Li_3V_2(PO_4)_3 ; xLiFePO_(4-y)Li_3V_2(PO_4)_3 ; 回收 英文关键词：spent lithium-ion batteries;;LiFePO_4;;Li_3V_2(PO_4)_3;;xLiFePO_4-yLi_3V_2(PO_4)_3;;recycling 中文刊名：COSE 英文刊名：Rare Metal Materials and Engineering 机构：哈尔滨工业大学;齐齐哈尔大学; 出版日期：2018-01-15 出版单位：稀有金属材料与工程 年：2018 期：v.47;No.378 基金：国家自然科学基金(51274075);; 国家环保公益性行业科研专项(201009028) 语种：中文; 页：COSE201801060 页数：7 CN：01 ISSN：61-1154/TG 分类号：348-354

摘要

由于LiFePO_4和Li_3V_2(PO_4)_3材料的特征相近,制备方法类似,提供了一种从废旧LiFePO_4和Li_3V_2(PO_4)_3混合电池中回收Li、Fe和V,再制备xLiFePO_4-yLi_3V_2(PO_4)_3的方法。在空气气氛中600℃热处理1h后,去除粘结剂PVDF使活性物质与集流体分离。调节Li、Fe、V和P摩尔比,球磨、锻烧,配制不同比例的xLiFePO_4-yLi_3V_2(PO_4)_3(x:y=5:1,7:1,9:1)复合电极材料。表征了其形貌、结构和电化学性能,结果表明,回收制备的复合材料将同时具备LiFePO_4和Li_3V_2(PO_4)_3两种材料的电化学性能,能显著改善LiFePO_4的倍率性能。
        Li,Fe and V were reclaimed from spent LiFePO_4 and Li_3V_2(PO_4)_3 LIBs(Lithium Ion Batteries)due to their similar characteristics and preparation methods and then xLiFePO_4-yLi_3V_2(PO_4)_3 material was prepared.The spent battery material was heat treated at 600 ~oC for 1 h in air to remove the PVDF binder,and then the active materials and aluminum foil collector were separated effectively.The xLiFePO_4-yLi_3V_2(PO_4)_3(x:y=5:1,7:1,9:1)was prepared through adjusting the mole ratio of Li,Fe,V and P,ball milling and calcining.The morphology,structure and electrochemical properties of the composite material were characterized.The results show that the prepared composite material has the electrochemical properties of both LiFePO_(4 )and Li_3V_2(PO_4)_3 simultaneously,which can significantly improve the rate capability of LiFePO_4.

引文

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