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Title: Systems-level investigation of aqueous batteries for understanding the benefit of water-in-salt electrolyte by synchrotron nanoimaging

Abstract

Water-in-salt (WIS) electrolytes provide a promising path toward aqueous battery systems with enlarged operating voltage windows for better safety and environmental sustainability. In this work, a new electrode couple, LiV3O8-LiMn2O4, for aqueous Li-ion batteries is investigated to understand the mechanism by which the WIS electrolyte improves the cycling stability at an extended voltage window. Operando synchrotron transmission x-ray microscopy on the LiMn2O4cathode reveals that the WIS electrolyte suppresses the mechanical damage to the electrode network and dissolution of the electrode particles, in addition to delaying the water decomposition process. Because the viscosity of WIS is notably higher, the reaction heterogeneity of the electrodes is quantified with x-ray absorption spectroscopic imaging, visualizing the kinetic limitations of the WIS electrolyte. This work furthers the mechanistic understanding of electrode–WIS electrolyte interactions and paves the way to explore the strategy to mitigate their possible kinetic limitations in three-dimensional architectures.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [2];  [2];  [1];  [3]; ORCiD logo [3]; ORCiD logo [3]
  1. Stony Brook Univ., NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Stony Brook Univ., NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Mesoscale Transport Properties (m2mt); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1614694
Report Number(s):
BNL-213819-2020-JAAM
Journal ID: ISSN 2375-2548
Grant/Contract Number:  
SC0012704; SC0012673
Resource Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 6; Journal Issue: 10; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Lin, Cheng-Hung, Sun, Ke, Ge, Mingyuan, Housel, Lisa M., McCarthy, Alison H., Vila, Mallory N., Zhao, Chonghang, Xiao, Xianghui, Lee, Wah-Keat, Takeuchi, Kenneth J., Takeuchi, Esther S., Marschilok, Amy C., and Chen-Wiegart, Yu-chen Karen. Systems-level investigation of aqueous batteries for understanding the benefit of water-in-salt electrolyte by synchrotron nanoimaging. United States: N. p., 2020. Web. doi:10.1126/sciadv.aay7129.
Lin, Cheng-Hung, Sun, Ke, Ge, Mingyuan, Housel, Lisa M., McCarthy, Alison H., Vila, Mallory N., Zhao, Chonghang, Xiao, Xianghui, Lee, Wah-Keat, Takeuchi, Kenneth J., Takeuchi, Esther S., Marschilok, Amy C., & Chen-Wiegart, Yu-chen Karen. Systems-level investigation of aqueous batteries for understanding the benefit of water-in-salt electrolyte by synchrotron nanoimaging. United States. doi:https://doi.org/10.1126/sciadv.aay7129
Lin, Cheng-Hung, Sun, Ke, Ge, Mingyuan, Housel, Lisa M., McCarthy, Alison H., Vila, Mallory N., Zhao, Chonghang, Xiao, Xianghui, Lee, Wah-Keat, Takeuchi, Kenneth J., Takeuchi, Esther S., Marschilok, Amy C., and Chen-Wiegart, Yu-chen Karen. Fri . "Systems-level investigation of aqueous batteries for understanding the benefit of water-in-salt electrolyte by synchrotron nanoimaging". United States. doi:https://doi.org/10.1126/sciadv.aay7129. https://www.osti.gov/servlets/purl/1614694.
@article{osti_1614694,
title = {Systems-level investigation of aqueous batteries for understanding the benefit of water-in-salt electrolyte by synchrotron nanoimaging},
author = {Lin, Cheng-Hung and Sun, Ke and Ge, Mingyuan and Housel, Lisa M. and McCarthy, Alison H. and Vila, Mallory N. and Zhao, Chonghang and Xiao, Xianghui and Lee, Wah-Keat and Takeuchi, Kenneth J. and Takeuchi, Esther S. and Marschilok, Amy C. and Chen-Wiegart, Yu-chen Karen},
abstractNote = {Water-in-salt (WIS) electrolytes provide a promising path toward aqueous battery systems with enlarged operating voltage windows for better safety and environmental sustainability. In this work, a new electrode couple, LiV3O8-LiMn2O4, for aqueous Li-ion batteries is investigated to understand the mechanism by which the WIS electrolyte improves the cycling stability at an extended voltage window. Operando synchrotron transmission x-ray microscopy on the LiMn2O4cathode reveals that the WIS electrolyte suppresses the mechanical damage to the electrode network and dissolution of the electrode particles, in addition to delaying the water decomposition process. Because the viscosity of WIS is notably higher, the reaction heterogeneity of the electrodes is quantified with x-ray absorption spectroscopic imaging, visualizing the kinetic limitations of the WIS electrolyte. This work furthers the mechanistic understanding of electrode–WIS electrolyte interactions and paves the way to explore the strategy to mitigate their possible kinetic limitations in three-dimensional architectures.},
doi = {10.1126/sciadv.aay7129},
journal = {Science Advances},
number = 10,
volume = 6,
place = {United States},
year = {2020},
month = {3}
}

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