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Control of magnesium interfacial reactions in aqueous electrolytes towards a biocompatible battery
journal contribution
posted on 2008-08-20, 00:00 authored by B Winther-Jensen, M Gaadingwe, D MacFarlane, Maria ForsythMaria ForsythA stable magnesium battery has been developed based on a magnesium anode, a poly(dioxyethane thiophene) (PEDOT) cathode and a near-saturated aqueous solution of LiCl, MgCl2, or mixture of these salts at pH of 11. This combination leads to a low water activity in the electrolyte, which thus suppresses the hydrogen evolution reaction on Mg, as well as producing a stable oxy-hydroxide film which protects the metal surface from freely corroding. The conducting polymer cathode is reduced somewhat during the discharge process, however, appears to be readily re-oxidised (as determined from the resistance) by the oxygen present in the cell. The cell is therefore primarily a Mg/O2 battery, however, the PEDOT appears to enhance the performance, in particular the discharge voltage.
History
Journal
Electrochimica actaVolume
53Issue
20Pagination
5881 - 5884Publisher
Elsevier Science Pub. Co.Location
New York, N.Y.Publisher DOI
ISSN
0013-4686eISSN
1873-3859Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2008, Elsevier Ltd.Usage metrics
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