Comprehensive H2 O Molecules Regulation via Deep Eutectic Solvents for Ultra-Stable Zinc Metal Anode.
Angew Chem Int Ed Engl
; 62(8): e202215552, 2023 Feb 13.
Article
em En
| MEDLINE
| ID: mdl-36536537
ABSTRACT
The corrosion, parasitic reactions, and aggravated dendrite growth severely restrict development of aqueous Zn metal batteries. Here, we report a novel strategy to break the hydrogen bond network between water molecules and construct the Zn(TFSI)2 -sulfolane-H2 O deep eutectic solvents. This strategy cuts off the transfer of protons/hydroxides and inhibits the activity of H2 O, as reflected in a much lower freezing point (<-80 °C), a significantly larger electrochemical stable window (>3â
V), and suppressed evaporative water from electrolytes. Stable Zn plating/stripping for over 9600â
h was obtained. Based on experimental characterizations and theoretical simulations, it has been proved that sulfolane can effectively regulate solvation shell and simultaneously build the multifunctional Zn-electrolyte interface. Moreover, the multi-layer homemade modular cell and 1.32â
Ah pouch cell further confirm its prospect for practical application.
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MEDLINE
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En
Ano de publicação:
2023
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Article