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author：

Lan, X. (Lan, X..) [1] | Liu, R. (Liu, R..) [2] | Xue, L. (Xue, L..) [3] | Huang, M. (Huang, M..) [4] | Xie, M. (Xie, M..) [5] | Wang, H. (Wang, H..) [6] | Zhang, H. (Zhang, H..) [7] | Yang, F. (Yang, F..) [8]

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Abstract：

The　efficient　recovery　of　lithium　(Li+)　from　salt　lakes　has　become　a　pressing　issue　for　the　lithium　battery　industry.　In　this　study,　an　electrochemically　enhanced　extraction　system　with　industrialization　potential　was　developed,　which　increased　the　separation　efficiency　of　Li+　by　coupling　an　electric　field　with　ionic　liquid　extraction.　A　promising　1-butyl-3-methylimidazolium-2-thiophenecarbonyl　trifluoroacetone　([C4mim][TTA])　extraction　agent　was　developed.　Furthermore,　the　functionalized　ionic　liquid　(FIL)　was　dissolved　in　an　ionic　liquid　mixture　to　further　increase　its　extraction　capacity.　The　separation　performance　and　mechanisms　of　Li+　through　[C4mim][TTA]　liquid–liquid　extraction　were　investigated.　The　results　showed　that　within　a　pH　range　greater　than　2,　[C4mim][TTA]　had　a　very　high　separation　efficiency　for　Li+.　Additionally,　liquid–liquid　extraction　in　solutions　simulating　the　concentrations　of　Li+,　Na+,　and　K+　found　in　salt　lakes　revealed　very　high　Li+　separation　coefficients　of　βLi/K　=　3746　and　βLi/Na　=　1287.　Under　an　applied　electric　field　of　2.4　V,　the　electrochemically　enhanced　extraction　system　achieved　separation　coefficients　of　βLi/K　=　6678　and　βLi/Na　=　3068　within　2　h,　which　represent　the　highest　reported　values　to　date.　In　this　study,　a　novel　electrochemically　coupled　ionic　liquid　extraction　system　with　potential　for　industrialization　is　proposed.　©　2025　Elsevier　B.V.

Keyword：

Electrochemical enhanced extraction Functionalized ionic liquids Lithium Simulated salt lake Β-Diketone

Community：

  • [ 1 ] [Lan X.]College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 2 ] [Lan X.]Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 3 ] [Lan X.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, 361021, China
  • [ 4 ] [Lan X.]Fujian College, University of Chinese Academy of Sciences Fuzhou, Fujian, 350002, China
  • [ 5 ] [Liu R.]Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 6 ] [Liu R.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, 361021, China
  • [ 7 ] [Xue L.]Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 8 ] [Xue L.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, 361021, China
  • [ 9 ] [Xue L.]Fujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy Systems, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 10 ] [Huang M.]Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 11 ] [Huang M.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, 361021, China
  • [ 12 ] [Xie M.]Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 13 ] [Xie M.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, 361021, China
  • [ 14 ] [Wang H.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, 361021, China
  • [ 15 ] [Zhang H.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, 361021, China
  • [ 16 ] [Yang F.]Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 17 ] [Yang F.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, 361021, China
  • [ 18 ] [Yang F.]Fujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy Systems, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 19 ] [Yang F.]Key Laboratory of Rare Earths, Chinese Academy of Sciences, and China Rare Earth Group Research Institute, Ganzhou, 341000, China
  • [ 20 ] [Yang F.]China Rare Earth Group Co., Ltd, Ganzhou, 341001, China

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Source ：

Hydrometallurgy

ISSN： 0304-386X

Year： 2025

Volume： 237

4 . 8 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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