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Green synthesis of Co3O4/graphene nanocomposite as cathode for magnesium batteries Cover

Green synthesis of Co3O4/graphene nanocomposite as cathode for magnesium batteries

By: E. M. Kamar and  E. Sheha  
Open Access
|Oct 2017

Abstract

Ultrafine Co3O4 nanoparticles homogeneously attached to graphene sheets by sonochemical method have been demonstrated as a promising cathode material for magnesium batteries. X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) have been employed to characterize the structural properties of this material. SEM analyses clearly confirmed that the Co3O4 nanoparticles have been uniformly coated on the entire surface of graphene sheets to form a compact composite. The Co3O4-graphene nanocomposite was employed as a cathode electrode in magnesium-ion batteries, and their electrochemical properties were briefly investigated. The graphene sheets can also effectively buffer the volume change in Co3O4 upon magnesium insertion/extraction, thus improving the cycling preformance of the composite electrode. It was revealed that the Co3O4-graphene composite can provide a small capacity of 16 mAh·g-1 using a new nonaqueous electrolyte that is tetrahydrofuran-free, which provides a new direction to explore cathode materials for Mg batteries.

DOI: https://doi.org/10.1515/msp-2017-0076 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Language: English
Page range: 528 - 533
Submitted on: Nov 13, 2016
Accepted on: Sep 2, 2017
Published on: Oct 31, 2017
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2017 E. M. Kamar, E. Sheha, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.