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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202201744
|2 doi
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|a pubmed24n1127.xml
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|a (DE-627)NLM338196994
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|a (NLM)35288981
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|a DE-627
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|a eng
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|a Yang, Min
|e verfasserin
|4 aut
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|a A Binary Hydrate-Melt Electrolyte with Acetate-Oriented Cross-Linking Solvation Shells for Stable Zinc Anodes
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 06.05.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 Wiley-VCH GmbH.
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|a Aqueous zinc-ion batteries (ZIBs) with low cost and high safety are promising energy-storage devices. However, ZIBs with metal Zn anodes usually suffer from low coulombic efficiency and poor cycling performance due to the occurrence of side reactions on the Zn anodes. Here, a binary hydrate-melt ZnCl2 /Zn(OAc)2 electrolyte is designed to suppress the hydrogen evolution reaction and by-product formation on Zn anodes by adjusting the Zn2+ solvation structure. In the solvation structure of the hydrate-melt ZnCl2 /Zn(OAc)2 electrolyte, the carboxylate group in OAc- will coordinate with the Zn2+ , which will weaken the interaction between Zn2+ and H2 O molecules to achieve higher ionization energy of H2 O molecules. Simultaneously, these carboxylate groups of OAc- can serve as H-bond acceptors to construct H-bonds with H2 O molecules in their neighboring solvation structures, forming a cross-linking H-bond network. Such a cross-linking H-bond network further suppresses the water activity in ZnCl2 /Zn(OAc)2 electrolyte. As a result, in such an electrolyte, the side reactions are effectively restricted on Zn anodes and thus Zn anodes can achieve a high coulombic efficiency of 99.59% even after cycling. To illustrate the feasibility of the ZnCl2 /Zn(OAc)2 electrolyte in aqueous ZIBs, Zn||p-chloranil cells are assembled based on the ZnCl2 /Zn(OAc)2 electrolyte. The resultant Zn||p-chloranil cells exhibit enhanced cycling performance compared with the cases with a conventional ZnSO4 electrolyte
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|a Journal Article
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|a Zn anodes
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|a cross-linking
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|a hydrate-melt electrolyte
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|a solvation structures
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4 |
|a water activity
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1 |
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|a Zhu, Jiacai
|e verfasserin
|4 aut
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1 |
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|a Bi, Songshan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Rui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Niu, Zhiqiang
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 34(2022), 18 vom: 30. Mai, Seite e2201744
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:34
|g year:2022
|g number:18
|g day:30
|g month:05
|g pages:e2201744
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|u http://dx.doi.org/10.1002/adma.202201744
|3 Volltext
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