Localized Eutectic Electrolytes for Stable Aqueous Zinc-Ion Batteries

Huida Lyu; Jung Tae Kim; Dongfang Cheng; Xintong Yuan; Mackenzie Babetta Anderson; Keyue Liang; Jiayi Yu; Philippe Sautet; Richard B. Kaner; Yuzhang Li

doi:10.1021/acsenergylett.5c00491

Journal article

Localized Eutectic Electrolytes for Stable Aqueous Zinc-Ion Batteries

Huida Lyu, Jung Tae Kim, Dongfang Cheng, Xintong Yuan, Mackenzie Babetta Anderson, Keyue Liang, Jiayi Yu, Philippe Sautet, Richard B. Kaner and Yuzhang Li

ACS energy letters, Vol.10(6), pp.2924-2933

06/13/2025

DOI: https://doi.org/10.1021/acsenergylett.5c00491

Handle:

https://hdl.handle.net/20.500.12741/rep:14162

PMID: 40535459

Abstract

Aqueous zinc-ion batteries (AZIBs) have been regarded as promising candidates for large-scale energy storage. However, the poor reversibility of Zn electrodeposition at low current densities still remains a great challenge in developing practical AZIBs. In this work, a localized eutectic electrolyte (LEE) is proposed by introducing trioxane to a baseline eutectic electrolyte, 2.0 M Zn-(OTf) in water/sulfolane (50:50 vol %), for reversible Zn anodes under challenging conditions (low N/P ratios and low current densities). Trioxane serves to disperse the aqueous eutectic domain and construct a solvation-sheath-repelled inner Helmholtz plane, thus regulating charge transfer kinetics to enable further suppression of electrolyte corrosion and improved Zn morphology. Zn||Zn V O · H O full cells with a low N/P ratio (≤4) and a low current density of 100 mA cathode (corresponding to a 0.33 C rate) exhibit enhanced cycling stability and a prolonged lifespan (nearly 3 months) in the LEE.

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Title: Localized Eutectic Electrolytes for Stable Aqueous Zinc-Ion Batteries
Creators: Huida Lyu (Author) - University of California, Los Angeles
Jung Tae Kim (Author) - University of California, Los Angeles
Dongfang Cheng (Author) - University of California, Los Angeles
Xintong Yuan (Author) - University of California, Los Angeles
Mackenzie Babetta Anderson (Author) - University of California, Los Angeles
Keyue Liang (Author) - University of California, Los Angeles
Jiayi Yu (Author) - University of California, Los Angeles
Philippe Sautet (Author) - University of California, Los Angeles
Richard B. Kaner (Author) - California NanoSystems Institute
Yuzhang Li (Author) - California NanoSystems Institute
Academic Unit: Chemistry Department
Publisher: AMER CHEMICAL SOC
Publication Details: 06/13/2025
Grant note: U.S. Department of Energy Aqueous Battery Consortium - U.S. Department of Energy: W911NF-24-1-0369 U.S. Army DEVCOM ARL Army Research Office (ARO) Energy Sciences Competency, Advanced Energy Materials Program: R02CP7008 University of California Climate Action Seed Grant UCLA Molecular Instrumentation Center Hui-Chun Chin and Tsung-Dao Lee Chinese Undergraduate Research Endowment (CURE) Hoffman2 high-performance cluster at UCLA
This work is supported by the Aqueous Battery Consortium, funded by the U.S. Department of Energy. This work was supported by the U.S. Army DEVCOM ARL Army Research Office (ARO) Energy Sciences Competency, Advanced Energy Materials Program award # W911NF-24-1-0369. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the U.S. Army or the U.S. Government. The authors also thank the University of California Climate Action Seed Grant R02CP7008 (Y.L. and R.K.), and the Dr. Myung Ki Hong Endowed Chair in Materials Innovation at UCLA (R.K.) for financial support. We acknowledge the use of the UCLA-CNSI EICN Facilities and the support provided by UCLA Molecular Instrumentation Center. H.L. sincerely acknowledges Guohao Hao for his help in battery testing, the support of Hui-Chun Chin and Tsung-Dao Lee Chinese Undergraduate Research Endowment (CURE), and the Hoffman2 high-performance cluster at UCLA.
Identifiers: 99258328273001671; https://hdl.handle.net/20.500.12741/rep:14162; https://doi.org/10.1021/acsenergylett.5c00491
Language: English
Number of pages: 10

Localized Eutectic Electrolytes for Stable Aqueous Zinc-Ion Batteries

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