Rational manipulation of electrolyte to induce homogeneous SEI on hard carbon anode for sodium-ion battery
Document Type
Article
Publication Date
7-1-2024
Abstract
Sodium-ion batteries (SIBs) have great potential to be the next major energy storage devices due to their obvious advantages and developing advanced electrodes and electrolytes is urgently necessary to promote its future industrialization. However, hard carbon as a state-of-the-art anode of SIBs still suffers from the low initial Coulomb efficiency and unsatisfactory rate capability, which could be improved by forming desirable solid electrolyte interphases (SEI) to some extent. Indeed, the chemistry and morphology of these interfacial layers are fundamental parameters affecting the overall battery operation, and optimizing the electrolyte to dictate the quality of SEI on hard carbon is a key strategy. Hence, this review summarizes the recent research on SEI design by electrolyte manipulation from solvents, salts, and additives. It also presents some potential mechanisms of SEI formation in various electrolyte systems. Besides, the current advanced characterization techniques for electrolyte and SEI structure analyses have been comprehensively discussed. Lastly, current challenges and future perspectives of SEI formation on hard carbon anode for SIBs are provided from the viewpoints of its compositions, evolution processes, structures, and characterization techniques, which will promote SEI efficient manipulation and improve the performance of hard carbon, and further contribute to the development of SIBs. (c) 2024 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.
Keywords
SEI, Electrolyte optimization, Hard carbon, Electrochemical performance, Sodium -ion batteries
Divisions
PHYSICS,umpedac
Funders
Ministry of Higher Education through the Fundamental Research Grant Scheme (FRGS/1/2022/STG05/UM/01/2),Ministry of Energy, Science, Technology, Environment and Climate Change (MESTECC), Malaysia (MOSTI002-2021TED1),Key Research Program of Yichang City (2023KYPT0303)
Publication Title
Journal of Energy Chemistry
Volume
94
Publisher
Elsevier
Publisher Location
RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS