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Room-temperature extraction of individual elements from charged spent LiFePO_(4)batteries

Rare Metals 2022年第5期41卷 1595-1604页

作者： Mei-Cen Fan Yun Zhao Yu-Qiong Kang John Wozny Zheng Liang Jun-Xiong Wang Guang-Min Zhou Bao-Hua Li Naser Tavajohi Fei-Yu Kang Shenzhen Key Laboratory on Power Battery Safety and Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate School(SIGS)Shenzhen 518055China Department of Chemistry and Biochemistry Northern Illinois UniversityDekalb 60115USA School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghai 200240China Shenzhen Geim Graphene Center Tsinghua-Berkeley Shenzhen Institute and Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Department of Chemistry Umea UniversityUmeii 90187Sweden

Recycling millions of metric tons of spent LiFePO_(4) batteries would benefit human health while reducing resource depletion and environmental ***,recovering individual elements from the spent batteries without generating waste is ***,we present a distinctive approach for recycling spent LiFePO_(4) batteries at room temperature,where water is the only leaching agent ***_(4) and lithium intercalated graphite act as a precursor material for selectively extracting lithium,iron,and phosphorus through charging the LiFePO_(4) batteries to the delithiated *** solution extracted Fe from FePO_(4) within 30 min and regenerated without consumption,similar to a *** the optimal leaching conditions(1 mol·L^(-1) NaOH,0.5 h,NaOH/Fe molar ratio of 4.5),Fe and P leaching efficiencies achieved 89.1%and 99.2%,*** methodology reflected in this research reduced the material cost per kg cathode material to a fraction of previously published reports,only occupies 6.13%of previous *** addition,the method improved the battery recycling revenue calculated by the EverBatt model by 2.31 times and 1.94 times over pyrometallurgical and hydrometallurgical *** proposed method allows for the convenient recovery of the elemental components of spent LiFePO_(4) batteries.

关键词： Battery recycling Spent LiFePO_(4)batteries charged batteries FePO_(4) Lithiated anode

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