Communications: Elementary oxygen electrode reactions in the aprotic Li-air battery

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Communications: Elementary oxygen electrode reactions in the aprotic Li-air battery.

We discuss the electrochemical reactions at the oxygen electrode of an aprotic Li-air battery. Using density functional theory to estimate the free energy of intermediates during the discharge and charge of the battery, we introduce a reaction free energy diagram and identify possible origins of the overpotential for both processes. We also address the question of electron conductivity through ...

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Discharge in the lithium-O2 battery is known to occur either by a solution mechanism, which enables high capacity and rates, or a surface mechanism, which passivates the electrode surface and limits performance. The development of strategies to promote solution-phase discharge in stable electrolyte solutions is a central challenge for development of the lithium-O2 battery. Here we show that the...

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ژورنال

عنوان ژورنال: The Journal of Chemical Physics

سال: 2010

ISSN: 0021-9606,1089-7690

DOI: 10.1063/1.3298994