Journal
NATIONAL SCIENCE REVIEW
Volume 9, Issue 3, Pages -Publisher
OXFORD UNIV PRESS
DOI: 10.1093/nsr/nwab050
Keywords
room-temperature sodium-sulfur batteries; sulfur cathodes; polysulfide shuttling effects; Na dendrite formation; electro catalysis
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Funding
- National Natural Science Foundation of China [22005092, 52074113, 22005091, 51991343, 51991340, 61804050, 51872086]
- Fundamental Research Funds of the Central Universities [531107051048]
- Hunan Key Laboratory of Two-Dimensional Materials [2018TP1010]
- China Postdoctoral Science Foundation [2019M652757, 2020M672490, 2020TQ0091]
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This article discusses the advantages, challenges, and strategies of room-temperature sodium-sulfur batteries (RT-Na-S batteries), reviews recent progress, and provides a forward-looking perspective on achieving high-energy-density and robust batteries.
Room-temperature sodium-sulfur batteries (RT-Na-S batteries) are attractive for large-scale energy storage applications owing to their high storage capacity as well as the rich abundance and low cost of the materials. Unfortunately, their practical application is hampered by severe challenges, such as low conductivity of sulfur and its reduced products, volume expansion, polysulfide shuttling effect and Na dendrite formation, which can lead to rapid capacity fading. The review discusses the Na-S-energy-storage chemistry, highlighting its promise, key challenges and potential strategies for large-scale energy storage systems. Specifically, we review the electrochemical principles and the current technical challenges of RT-Na-S batteries, and discuss the strategies to address these obstacles. In particular, we give a comprehensive review of recent progresses in cathodes, anodes, electrolytes, separators and cell configurations, and provide a forward-looking perspective on strategies toward robust high-energy-density RT-Na-S batteries.
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