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An Attempt to Utilize Hard Magnetic BaFe12O19 Phase as a Cathode for Magnesium Batteries

  • Mahmoud H. Makled
  • E. ShehaEmail author
Article
  • 25 Downloads

Abstract

The sluggish Mg2+ kinetics in host materials is a big challenge that hinders realizing practical magnesium batteries. To overcome this problem, designing and testing a new system as a fast Mg2+ insertion cathode is a promising solution. Herein, hexagonal barium ferrite BaFe12O19 as cathode for magnesium ion batteries is presented for the first time. The M ferrite phase BaFe12O19 is synthesized via the co-precipitation method. X-ray diffraction confirms single hexagonal ferrite phase with lattice constants a = b = 5.49 Å and c = 23.8 Å. Transmission electron microscopy images reflect high porosity with rough surfaces for the ferrite particles. The magnetic study shows that present hexaferrite has a high value of coercivity (5.1 KOe) and saturation magnetization (54 emu/gm). The electrical conductivities are studied as a function of temperature and frequencies. The multi-conduction mechanisms and multilyers structures present in these types of ferrite, make it acceptable for Mg2+ intercalation. The as-prepared BaFe12O19 electrode delivers high initial discharge capacity of 170 mAh g−1. The BaFe12O19 is a promising cathode material for magnesium-ion battery applications.

Keywords

Hard magnetic barium ferrite cathode magnesium battery 

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Notes

Acknowledgment

This work is partially financially supported by the Support Development of Scientific Research Centre of Benha University (SDSRC) (Grant No. 1076) and Science Technology Development Fund (Grant No. 12564).

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  1. 1.Physics Department, Faculty of ScienceBenha UniversityBenhaEgypt

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