首页|Electrolyte Solvation Structure Design for High Voltage Zinc-Based Hybrid Batteries

Electrolyte Solvation Structure Design for High Voltage Zinc-Based Hybrid Batteries

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Zinc(Zn)metal anodes have enticed substantial curiosity for large-scale energy storage owing to inherent safety,high specific and volumetric energy capacities of Zn metal anodes.However,the aqueous electrolyte traditionally employed in Zn batteries suffers severe decomposition due to the narrow voltage stability window.Herein,we introduce N-methylformamide(NMF)as an organic solvent and modulate the solvation structure to obtain a stable organic/aqueous hybrid electrolyte for high-voltage Zn batteries.NMF is not only extremely stable against Zn metal anodes but also reduces the free water molecule availability by creating numerous hydrogen bonds,thereby accommodating high-voltage Zn||LiMn2O4 batteries.The introduction of NMF prevented hydrogen evolution reaction and promoted the creation of an F-rich solid electrolyte interphase,which in turn hampered dendrite growth on Zn anodes.The Zn||LiMn2O4 full cells delivered a high average Coulombic efficiency of 99.7％over 400 cycles.

aqueous electrolyteselectrolyte solvation structureshigh-voltage zinc batterieshybrid batteries

Pauline Jaumaux、Shijian Wang、Shuoqing Zhao、Bing Sun、Guoxiu Wang

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Centre for Clean Energy Technology,School of Mathematical and Physical Sciences,Faculty of Science,University of Technology Sydney,Ultimo NSW 2007,Australia

Australian Research Council(ARC)through the ARC Discovery projectsAustralian Research Council(ARC)through the ARC Discovery projectsAustralian Research Council(ARC)through the ARC Discovery projectsARC Future FellowshipARC Linkage projectARC Industry Transformation Research Hub

DP200101249DP210101389DP230101579FT220100561LP200200926IH180100020

2023

10.1002/eem2.12578

能源与环境材料(英文)

能源与环境材料(英文)

CSCD
ISSN：
年,卷(期)：2023.6(4)
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