Recovery of Cobalt and Manganese from Spent Lithium-ion Batteries using a Phosphonium-based Ionic Liquid

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  • FIRMANSYAH Mochmad L.
    Nanotechnology Engineering, School of Advanced Science and Multidisciplinary, Airlangga University
  • FAJAR Adroit T. N.
    Department of Applied Chemistry, Graduate School of Engineering, Kyushu University
  • MUKTI Rino R.
    Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Science, Institut Teknologi Bandung Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung Research and Innovation Center for Advanced Materials, Institut Teknologi Sumatera
  • ILMI Thalabul
    Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Science, Institut Teknologi Bandung
  • KADJA Grandprix T. M.
    Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Science, Institut Teknologi Bandung Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung Center for Catalysis and Reaction Engineering, Institut Teknologi Bandung
  • GOTO Masahiro
    Department of Applied Chemistry, Graduate School of Engineering, Kyushu University

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Abstract

<p>A novel ionic liquid (IL) trioctyldodecyl phosphonium bis(2,4,4-trimethylpentyl)phosphinate was developed as a recovery agent for cobalt(II) and manganese(II) from spent lithium-ion batteries (LIBs). Absence of organic diluent provides an advantageous factor to IL-based extraction than the conventional one. Co(II) and Mn(II) were extracted quantitatively from the aqueous phase to the IL phase. Extracted Co(II) and Mn(II) were stripped from the IL using water and NH4NO3, respectively. After stripping, the IL can be reused as the extractant, facilitating the realization of a continuous extraction process. The developed hydrophobic IL shows promise as an extractant for Co(II) and Mn(II) from the spent LIBs. </p>

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