V2O5 as magnesium cathode material with extended cyclic stability

  • Charalampos Drosos Delta Nano – Engineering Solutions Ltd.
  • Benjamin Moss Department of Chemistry, Molecular Science Research Hub, Imperial College London, White City Campus, London, W12 0BZ
  • Andreas Kafizas Department of Chemistry, Molecular Science Research Hub, Imperial College London, White City Campus, London, W12 0BZ and Grantham Institute for Climate Change, Imperial College London, South Kensington, London, SW7 2AZ
  • Dimitra Vernardou Department of Electrical & Computer Engineering, School of Engineering, Hellenic Mediterranean University, 710 04 Heraklion, Crete
Keywords: Magnesium ion batteries, chemical vapor deposition, electrode morphology, coating adherence, corrosive environment

Abstract

In this work, the electrochemical performance of aerosol-assisted chemical vapour deposited vanadium pentoxide cathodes at 600 °C, is presented. The as-grown oxides indicate specific discharge capacity of 300 mA h g-1 with capacity retention of 92 % after 10000 scans, coulombic efficiency of 100 %, noble structural stability and high reversibility. The present study shows the possibility to grow large-area magnesium cathode material with extended cycle stability via utilization of an aqueous electrolyte under a corrosive environment. This enhanced performance may be a combination of electrode morphology and adherence, when compared to previous work employing electrode growth temperature at 500 °C.

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Published
19-05-2020
Section
Electrochemical Science