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 |
|---|---|
| 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 |
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Keywords
- Aqueous electrolyte
- Biocompatible battery
- Mg passivation
- Poly(3,4-ethylene dioxythiophene)
- Primary battery
ASJC Scopus subject areas
- Chemical Engineering(all)
- Analytical Chemistry
- Electrochemistry
Cite this
Control of magnesium interfacial reactions in aqueous electrolytes towards a biocompatible battery. / Winther Jensen, Bjorn; Gaadingwe, M.; Macfarlane, D. R.; Forsyth, M.
In: Electrochimica Acta, Vol. 53, No. 20, 20.08.2008, p. 5881-5884.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Control of magnesium interfacial reactions in aqueous electrolytes towards a biocompatible battery
AU - Winther Jensen, Bjorn
AU - Gaadingwe, M.
AU - Macfarlane, D. R.
AU - Forsyth, M.
PY - 2008/8/20
Y1 - 2008/8/20
N2 - 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.
AB - 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.
KW - Aqueous electrolyte
KW - Biocompatible battery
KW - Mg passivation
KW - Poly(3,4-ethylene dioxythiophene)
KW - Primary battery
UR - http://www.scopus.com/inward/record.url?scp=44149127650&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=44149127650&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2008.04.005
DO - 10.1016/j.electacta.2008.04.005
M3 - Article
AN - SCOPUS:44149127650
VL - 53
SP - 5881
EP - 5884
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
IS - 20
ER -