Abstract
A 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.
Original language | English |
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Pages (from-to) | 5881-5884 |
Number of pages | 4 |
Journal | Electrochimica Acta |
Volume | 53 |
Issue number | 20 |
DOIs | |
Publication status | Published - 2008 Aug 20 |
Externally published | Yes |
Keywords
- Aqueous electrolyte
- Biocompatible battery
- Mg passivation
- Poly(3,4-ethylene dioxythiophene)
- Primary battery
ASJC Scopus subject areas
- Chemical Engineering(all)
- Analytical Chemistry
- Electrochemistry