Journal
TRENDS IN CHEMISTRY
Volume 4, Issue 1, Pages 48-59Publisher
CELL PRESS
DOI: 10.1016/j.trechm.2021.11.002
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Funding
- Singapore National Research Foundation [NRF-NRFF2017-04]
- University of Queensland-IIT Delhi Academy of Research (UQIDAR)
- Indian Institute of Technology Delhi (IIT Delhi)
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Sodium-metal anode battery technologies have brought significant advancements to energy storage research. New insights have been gained on the composition and stability of the solid electrolyte interphase (SEI) on the sodium-metal anode, with a focus on the impact of electrolyte structure and ion-solvation chemistry. This review discusses the crucial aspects of ion-solvation chemistry on the stability of SEI and highlights future research directions for designing a stable sodium-metal anode.
Sodium-metal anode battery technologies have revolutionized energy storage research. In recent years, new insights have been gained regarding the solid electrolyte interphase (SEI) on a sodium-metal anode; however, several questions remain to be answered, in particular the impact of electrolyte structure on the composition and physicochemical stability of the SEI. In addition, the impact of ion-solvation chemistry on the crystallinity of the SEI warrants a more detailed understanding. This review discusses the crucial aspects of sodium-ion solvation chemistry and its impact on the stability of the SEI. The core principles guiding the design of electrolytes through additives, ion-solvent interaction, and ion-pair formation are highlighted. Future research directions necessary to design a stable sodium-metal anode are also discussed.
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