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Molecular Adsorption‐Induced Interfacial Solvation Regulation to Stabilize Graphite Anode in Ethylene Carbonate‐Free Electrolytes.
- Source :
-
Advanced Functional Materials . 11/16/2023, Vol. 33 Issue 47, p1-10. 10p. - Publication Year :
- 2023
-
Abstract
- Many organic solvents have excellent solution properties, but fail to serve as lithium‐ion batteries (LIBs) electrolyte solvents, due to their electrochemical incompatibility with graphite anodes. Herein, a new strategy is proposed to address this issue by introducing a surface‐adsorbed molecular layer to regulate the interfacial solvation structure without the alteration of electrolyte composition and properties. As a proof‐of‐concept study, it is demonstrated for the first time that the intrinsically incompatible propylene carbonate (PC)‐based electrolyte becomes completely compatible with graphite anodes by introducing a layer of adsorbed hexafluorobenzene (HFB) molecules to weaken the Li+‐PC coordination strength and facilitate the interfacial desolvation process. As a consequence, the graphite/ NCM811 pouch cells using the PC‐based electrolyte containing only 1 vol.% HFB demonstrate excellent long‐term cycling stabilities over 1150 cycles. This strategy is also proved to be applicable to other ethylene carbonate (EC)–free electrolytes, thus providing a new avenue for developing advanced LIB electrolytes. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1616301X
- Volume :
- 33
- Issue :
- 47
- Database :
- Academic Search Index
- Journal :
- Advanced Functional Materials
- Publication Type :
- Academic Journal
- Accession number :
- 173659477
- Full Text :
- https://doi.org/10.1002/adfm.202306828