Simultaneous Regulation on Solvation Shell and Electrode Interface for Dendrite‐Free Zn Ion Batteries Achieved by a Low‐Cost Glucose Additive

Dendrite growth and by‐products in Zn metal aqueous batteries have impeded their development as promising energy storage devices. We utilize a low‐cost additive, glucose, to modulate the typical ZnSO4 electrolyte system for improving reversible plating/stripping on Zn anode for high‐performance Zn i...

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Vydané v:Angewandte Chemie International Edition Ročník 60; číslo 33; s. 18247 - 18255
Hlavní autori: Sun, Peng, Ma, Liang, Zhou, Wanhai, Qiu, Meijia, Wang, Zilong, Chao, Dongliang, Mai, Wenjie
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Weinheim Wiley Subscription Services, Inc 09.08.2021
Vydanie:International ed. in English
Predmet:
Anodes
Aqueous environments
Batteries
Decomposition reactions
dendrite-free Zn ion batteries
Dendrites
Dendritic structure
electrode interfaces
Electrolytes
Energy storage
Glucose
Manganese dioxide
Rechargeable batteries
Side reactions
simultaneous regulation
Solvation
solvation shell
Storage batteries
Water chemistry
Zinc
Zinc sulfate
ISSN:1433-7851, 1521-3773, 1521-3773
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Shrnutí:Dendrite growth and by‐products in Zn metal aqueous batteries have impeded their development as promising energy storage devices. We utilize a low‐cost additive, glucose, to modulate the typical ZnSO4 electrolyte system for improving reversible plating/stripping on Zn anode for high‐performance Zn ion batteries (ZIBs). Combing experimental characterizations and theoretical calculations, we show that the glucose in ZnSO4 aqueous environment can simultaneously modulate solvation structure of Zn2+ and Zn anode‐electrolyte interface. The electrolyte engineering can alternate one H2O molecule from the primary Zn2+‐6H2O solvation shell and restraining side reactions due to the decomposition of active water. Concomitantly, glucose molecules are inclined to absorb on the surface of Zn anode, suppressing the random growth of Zn dendrite. As a proof of concept, a symmetric cell and Zn‐MnO2 full cell with glucose electrolyte achieve boosted stability than that with pure ZnSO4 electrolyte. A low‐cost glucose additive into traditional ZnSO4 electrolyte can greatly inhibit the dendrite growth on Zn anodes in Zn ion batteries by simultaneously modulating the solvation shell in the electrolyte and electrode interface.
Bibliografia:ObjectType-Article-1
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ISSN:1433-7851
1521-3773
1521-3773
DOI:10.1002/anie.202105756