The emerging lithium-air batteries (cell voltage 2.9 V), 4Li + O2  2Li2O, n=1 per Li, have a theoretical specific energy (excluding O2 from ambient air and based on mass of Li metal only) calculated as: A. 22.3 Wh/g B. 11.2 Wh/g C. 33.4 Wh/g D. 44.5 Wh/g

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