Properties of Magnesium Electrode Covered with Magnesium Chloride-Modified Graphene Oxide

For the modification of reversibility of magnesium deposition–dissolution in non-aqueous glyme-based electrolytes, the surface of a magnesium metal or magnesium alloy AZ31 was covered by graphene oxide modified using Grignard reagent. After modification, the magnesium chloride moieties appeared to c...

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Bibliographic Details
Published in:Denki kagaku oyobi kōgyō butsuri kagaku 2021/01/05, Vol.89(1), pp.49-53
Main Authors: EGASHIRA, Minato, HIRATSUKA, Kaori
Format: Article
Language:English
Subjects:
Aqueous electrolytes
Deposition
Dissolution
Electrodes
Electrolytes
Electrolytic cells
Functional groups
Graphene
Graphene Oxide
Magnesium
Magnesium alloys
Magnesium base alloys
Magnesium Batteries
Magnesium Chloride
Magnesium Negative Electrode
Nonaqueous electrolytes
Reagents
Redox reactions
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Summary:For the modification of reversibility of magnesium deposition–dissolution in non-aqueous glyme-based electrolytes, the surface of a magnesium metal or magnesium alloy AZ31 was covered by graphene oxide modified using Grignard reagent. After modification, the magnesium chloride moieties appeared to connect with oxygen-containing functional groups of graphene oxide. The magnesium electrode covered with MgCl-modified graphene oxide exhibited a reversible redox reaction assigned to the deposition–dissolution of magnesium from the substance without overpotential in a conventional magnesium salt – glyme solution. The MgCl-modified graphene oxide-covered magnesium alloy electrode was compatible with two-electrode test cells with Mo6S8 positive electrode.
ISSN:1344-3542
2186-2451
DOI:10.5796/electrochemistry.20-00119