ChemInform Abstract: Novel Aqueous Aluminum/Sulfur Batteries.
Abstract
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ChemInform Abstract
A new class of Al/S batteries is introduced using concentrated polysulfide catholytes and an alkaline aluminum anode. It is expressed by Al oxidation and sulfur reduction. The faradaic capacity of the battery (based on K salts) is 361.7 Ah/kg and the theoretical energy density is 1.79 V × 361.7 Ah/kg = 647 Wh/kg. A first generation of these batteries is demonstrated with an open-circuit voltage of 1.3 V and energy densities of 170 and 110 Wh/kg based on dry and total battery materials, respectively. During discharge a thick solid Al(OH) 3 film develops on the Al surface which does not affect the cell performance.
