Progress and Prospects of Emerging Potassium–Sulfur Batteries

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 s...

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Bibliographic Details
Published in:Advanced energy materials 2022-12, Vol.12 (46), p.n/a
Main Authors: Lei, Yao‐Jie, Yang, Hui‐Ling, Liang, Yaru, Liu, Han‐Wen, Zhang, Binwei, Wang, Liang, Lai, Wei‐Hong, Wang, Yun‐Xiao, Liu, Hua‐Kun, Dou, Shi‐Xue
Format: Article
Language:English
Subjects:
energy storage systems
K–S batteries
optimization strategies
polysulfides
Potassium
potassium anodes
Redox reactions
Sulfur
sulfur cathodes
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Summary: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. Potassium‐sulfur batteries as a newly emerged energy storage system require systematic fundamental understandings regarding their mechanisms and challenges. In this review, efforts have been devoted to comprehensively summarize the recent progresses in each component of potassium‐sulfur batteries, including cathodes, anodes, electrolytes, separators, and binders. Perspectives on potassium‐sulfur batteries are also provided for future development and applications.
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.202202523