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Lithium-oxygen (air) has one of the largest theoretical energy densities of any practical electrochemical couple. This paper will discuss the architecture of an advanced Li-air cathode with an average voltage of 2.33 V and a gravimetric capacity of 5813 mAh/g of carbon. This is the first time such a high capacity has been achieved at a current density of 0.1 mA/cm 2 and without the use of catalysts. Lithium-oxygen (air) has one of the largest theoretical energy densities of any practical electrochemical couple. Based on an inexhaustible and ubiquitous source of oxygen the Li-air couple has a theoretical gravimetric energy density of 13.14 kWh/kg 1. Figure 1 shows a comparison of common energy storage/conversion technologies based on energy
Beattie et al. (2008) studied this question.
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