Journal
ELECTROCHEMICAL AND SOLID STATE LETTERS
Volume 12, Issue 7, Pages A145-A149Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3129126
Keywords
electrochemical electrodes; electrochemistry; electroplated coatings; lithium compounds; magnesium; secondary cells
Funding
- CICyT [MAT2005-03069]
- Junta de Andalucia Group [FQM 175]
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Lithium was electroplated on a fresh magnesium surface. The deposit was tested as a negative electrode in a cell containing LiFePO4 as a positive electrode. The reactions that took place on charging the cell were total conversion of phospholivine into a heterosite structure and lithium deposition onto Li(Mg). On discharging, the heterosite phase was partially converted to LiFePO4 and lithium extracted from the Li1+x(Mg) electrode. The performance of this cell surpassed that of lithium foil as an electrode, providing higher capacities under C/10 and C/5 regimes. Several factors associated with the Li1+x(Mg) surface and the Li/Mg interface account for this good behavior.
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