首页|Hydrometallurgical recovery of lithium carbonate and iron phosphate from blended cathode materials of spent lithium-ion battery

Hydrometallurgical recovery of lithium carbonate and iron phosphate from blended cathode materials of spent lithium-ion battery

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The recycling of cathode materials from spent lithium-ion battery has attracted extensive attention,but few research have focused on spent blended cathode materials.In reality,the blended materials of lithium iron phosphate and ternary are widely used in electric vehicles,so it is critical to design an effective recycling technique.In this study,an efficient method for recovering Li and Fe from the blended cathode materials of spent LiFePO4 and LiNixCoyMn1-x-yO2 batteries is proposed.First,87％Al was removed by alkali leaching.Then,91.65％Li,72.08％Ni,64.6％Co and 71.66％Mn were further separated by selective leaching with H2SO4 and H2O2.Li,Ni,Co and Mn in solution were recovered in the form of Li2CO3 and hydroxide respectively.Subsequently,98.38％Fe was leached from the residue by two stage process,and it is recovered as FePO4·2H2O with a purity of 99.5％by pre-cipitation.Fe and P were present in FePO4·2H2O in amounts of 28.34％and 15.98％,respectively.Addition-ally,the drift and control of various components were discussed,and cost-benefit analysis was used to assess the feasibility of potential application.

Spent lithium-ion batteryBlended cathode materialsRecoveryLithium carbonateIron phosphate

Shao-Le Song、Run-Qing Liu、Miao-Miao Sun、Ai-Gang Zhen、Fan-Zhen Kong、Yue Yang

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School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China

Zhejiang Tianneng New Materials Co.,Ltd.,Huzhou 313103,China

National Key Research and Development ProgramNational Key Research and Development ProgramNational Key Research and Development ProgramNatural Science Foundation of HunanNatural Science Foundation of HunanNational Natural Science Foundation of ChinaCentral South University Innovation-Driven Research Program

2019YFC19078012019YFC19078032019YFC19078042021JJ20200662020JJ4733519043402023CXQD009

2024

10.1007/s12598-023-02493-9

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(3)
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