A Fe(III)-driven strategy for efficient closed-loop recovery of critical metals from spent LiNixCoyMnzO2 powder

被引：2

作者：

Su, Fanyun ^{[1
]}

Zhou, Xiangyang ^{[1
]}

Liu, Yingkang ^{[1
]}

Li, Zhenxiao ^{[1
]}

Kou, Huaishuo ^{[1
]}

Liu, Xiaojian ^{[1
]}

Xu, Haikun ^{[3
]}

Tang, Jingjing ^{[1
]}

Chen, Yanxi ^{[1
]}

Liu, Guangli ^{[1
]}

Wang, Hui ^{[1
]}

Yang, Juan ^{[1
,2
]}

机构：

[1] Cent South Univ, Engn Res Ctr, Sch Met & Environm, Minist Educ Adv Battery Mat, Changsha 410083, Peoples R China

[2] Hunan Prov Key Lab Nonferrous Value Added Met, Changsha 410083, Peoples R China

[3] Cent South Univ, Informat & Network Ctr, Changsha 410083, Hunan, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2024年 / 493卷

关键词：

Fe(III)-driven; RegeneratedLiNixCoyMnzO2; Valuable metals; Stepwise precipitation; Spent LIBs; LITHIUM-ION BATTERIES; CATHODE MATERIALS; VALUABLE METALS;

D O I：

10.1016/j.cej.2024.152297

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

With the concepts of carbon peaking and carbon neutrality taking hold, the demand for recycling of spent lithium -ion batteries (LIBs) is increasing rapidly. However, current recycling methods are mostly faced with the dilemma of high cost and low efficiency and unable to meet the demand for energy conservation and consumption reduction. Here, inspired by the formation of acid mine drainage (AMD), we propose a Fe(III)-driven recovery approach, in which the leaching of valuable metals is enhanced by the addition of solid reagents Fe 2 (SO 4 ) 3 and pyrite (FeS 2 ) to create an acidic reducing atmosphere. Under optimal conditions, the leaching efficiency of Ni/Co/Mn/Li reached 99.9%. In addition, NH 3 & sdot;H 2 O-NaOH was employed to adjust the pH of the leachate for stepwise precipitation of Fe and Ni/Co/Mn. Li was finally collected as Li 2 CO 3 and Fe(III) could be recycled. We have also made attempts on Ni/Co/Mn co -precipitation and Li 2 CO 3 resynthesis of regenerated LiNi x Co y Mn z O 2 (NCM). It is predicted that this process can provide a green, efficient and economical closed -loop approach for cathode recovery of LIBs, with far-reaching implications for the entire battery recycling industry.

引用

页数：12

共 31 条

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