Waste of batteries management: Synthesis of magnetocaloric manganite compound from the REEs mixture generated during hydrometallurgical processing of NiMH batteries
Artikel i vetenskaplig tidskrift, 2021

In the present study, rare earth elements (REEs, i.e., La, Ce, Nd, and Pr) were hydrometallurgically recovered in oxalate form with presence of very low concentration of Co, Al, Zn and Ni from solution after processing of spent Nickel metal hydride (Ni-MH) batteries. The recovered mixture was used as alternative source in the synthesis of magnetocaloric materials. In this study, a manganite sample with general formula ABO3 was selected to be prepared since it is relatively easy to synthesize and is tuneable by adjustment of the doping concentration. The conventional solid-state reaction method was used to prepare an orthorhombic structure of manganite with presence of REE2O3 and MnO2 as secondary phases reported from x-ray pattern at room temperature. The thermomagnetic measurements showed a PM to FM transition at 184 K in a 0.01 T magnetic field that shifts to 194 K by increasing the magnetic field to 1.8 T. The magnetocaloric properties were determined by calculating the isothermal entropy change and directly measuring the adiabatic temperature change. A reversible magnetocaloric effect was observed.

Hydrometallurgy

Rare earth recycling

Manganites

Magnetic cooling

Ni-MH batteries

Magnetocaloric effect

Författare

Moufida Mansouri

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Francesco Cugini

Istituto dei Materiali per l'Elettronica ed il Magnetismo

Universita degli Studi di Parma

Cristian Tunsu

Istituto dei Materiali per l'Elettronica ed il Magnetismo

Massimo Solzi

Istituto dei Materiali per l'Elettronica ed il Magnetismo

Universita degli Studi di Parma

Franca Albertini

Istituto dei Materiali per l'Elettronica ed il Magnetismo

Burcak Ebin

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Martina Petranikova

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Sustainable Materials and Technologies

2214-9937 (ISSN)

Vol. 28 e00267

Ämneskategorier

Oorganisk kemi

Materialkemi

Den kondenserade materiens fysik

DOI

10.1016/j.susmat.2021.e00267

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Senast uppdaterat

2021-04-01