Journal
ADVANCED ENERGY MATERIALS
Volume 12, Issue 46, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202202523
Keywords
energy storage systems; K-S batteries; optimization strategies; polysulfides; potassium anodes; sulfur cathodes
Categories
Funding
- Australian Research Council (ARC) [DE170100928, DE220101113, DP200100365]
- Australian Renewable Energy Agency (ARENA) Project [G00849]
- Australian Research Council [DE220101113] Funding Source: Australian Research Council
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The potassium-sulfur battery (K-S battery) is a promising battery technology with high energy density and low cost. However, its low reversible capacity and safety issues related to the K metal anode hinder its development. Current research focuses on improving the sulfur cathode, electrolyte, separator, and K metal anode of the K-S system.
The potassium-sulfur battery (K-S battery) as an innovative battery technology is a promising candidate for large-scale applications, due to its high energy density and the low cost of both K and S. The development of the K-S technology is, however, inhibited by its low reversible capacity and the safety issues related to the K metal anode. Here, the review starts by discussing the mechanism of the redox reactions for the K-S batteries and emphasizes the challenges for this battery system based on its current research status. Furthermore, the current improvement strategies for the K-S system in terms of the sulfur cathode, electrolyte, separator, and K metal anode are summarized. Finally, future perspectives on the development of the K-S system are proposed.
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