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A long-term stable zinc metal anode enabled by a mannitol additive.
- Source :
- Journal of Materials Chemistry A; 11/28/2023, Vol. 11 Issue 44, p23779-23786, 8p
- Publication Year :
- 2023
-
Abstract
- Despite the promising potential of zinc-ion batteries (ZIBs) for large-scale energy storage applications, their electrochemical performance is still hindered by zinc dendrites and side reactions. To address these challenges, the optimization of electrolyte composition emerges as a practical and straightforward approach to enhance the coulombic efficiency (CE) and Zn plating/stripping reversibility of ZIBs. Here, mannitol stands out due to its abundance of polar groups and cost-effectiveness, and an electrolyte mixture consisting of 0.02 M mannitol and 2 M ZnSO<subscript>4</subscript> is demonstrated, resulting in an impressive improvement in Zn reversibility compared to the pure ZnSO<subscript>4</subscript> electrolyte. Density functional theory (DFT) calculations and spectroscopic analysis shed light on mannitol's capability to reconstruct the solvation structure of Zn<superscript>2+</superscript> and replace free water molecules. The inhibited dendrite growth on the zinc metal anode is further confirmed through in situ characterization. This work paves the way for the development of long-lifespan ZIBs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 11
- Issue :
- 44
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 173602271
- Full Text :
- https://doi.org/10.1039/d3ta04700h