Ambient- or room-temperature sodium-sulfur batteries (RT Na-S) are gaining much attention as a low-cost option for large-scale electrical energy storage applications. However, their adoption is hampered by severe challenges. This concept paper summarizes first the operating principles, history, recent progress, and challenges of RT Na-S battery technology, and then suggests future directions towards enhancing performance in order for it to be a viable technology.
Keywords: ambient temperature; batteries; electrochemical energy storage; sodium polysulfide; sodium-sulfur batteries.
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.