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Title: Room-temperature cycling of metal fluoride electrodes: Liquid electrolytes for high-energy fluoride ion cells

Abstract

Fluoride ion batteries are potential “next-generation” electrochemical storage devices that offer high energy density. At present, such batteries are limited to operation at high temperatures because suitable fluoride ion–conducting electrolytes are known only in the solid state. We report a liquid fluoride ion–conducting electrolyte with high ionic conductivity, wide operating voltage, and robust chemical stability based on dry tetraalkylammonium fluoride salts in ether solvents. Pairing this liquid electrolyte with a copper–lanthanum trifluoride (Cu@LaF 3 ) core-shell cathode, we demonstrate reversible fluorination and defluorination reactions in a fluoride ion electrochemical cell cycled at room temperature. Fluoride ion–mediated electrochemistry offers a pathway toward developing capacities beyond that of lithium ion technology.

Authors:
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Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1484839
Grant/Contract Number:  
AC05-00OR22725; AC02-05CH11231; DE–AC02–05CH11231
Resource Type:
Published Article
Journal Name:
Science
Additional Journal Information:
Journal Name: Science Journal Volume: 362 Journal Issue: 6419; Journal ID: ISSN 0036-8075
Publisher:
American Association for the Advancement of Science (AAAS)
Country of Publication:
United States
Language:
English

Citation Formats

Davis, Victoria K., Bates, Christopher M., Omichi, Kaoru, Savoie, Brett M., Momčilović, Nebojša, Xu, Qingmin, Wolf, William J., Webb, Michael A., Billings, Keith J., Chou, Nam Hawn, Alayoglu, Selim, McKenney, Ryan K., Darolles, Isabelle M., Nair, Nanditha G., Hightower, Adrian, Rosenberg, Daniel, Ahmed, Musahid, Brooks, Christopher J., Miller, III, Thomas F., Grubbs, Robert H., and Jones, Simon C. Room-temperature cycling of metal fluoride electrodes: Liquid electrolytes for high-energy fluoride ion cells. United States: N. p., 2018. Web. doi:10.1126/science.aat7070.
Davis, Victoria K., Bates, Christopher M., Omichi, Kaoru, Savoie, Brett M., Momčilović, Nebojša, Xu, Qingmin, Wolf, William J., Webb, Michael A., Billings, Keith J., Chou, Nam Hawn, Alayoglu, Selim, McKenney, Ryan K., Darolles, Isabelle M., Nair, Nanditha G., Hightower, Adrian, Rosenberg, Daniel, Ahmed, Musahid, Brooks, Christopher J., Miller, III, Thomas F., Grubbs, Robert H., & Jones, Simon C. Room-temperature cycling of metal fluoride electrodes: Liquid electrolytes for high-energy fluoride ion cells. United States. doi:10.1126/science.aat7070.
Davis, Victoria K., Bates, Christopher M., Omichi, Kaoru, Savoie, Brett M., Momčilović, Nebojša, Xu, Qingmin, Wolf, William J., Webb, Michael A., Billings, Keith J., Chou, Nam Hawn, Alayoglu, Selim, McKenney, Ryan K., Darolles, Isabelle M., Nair, Nanditha G., Hightower, Adrian, Rosenberg, Daniel, Ahmed, Musahid, Brooks, Christopher J., Miller, III, Thomas F., Grubbs, Robert H., and Jones, Simon C. Thu . "Room-temperature cycling of metal fluoride electrodes: Liquid electrolytes for high-energy fluoride ion cells". United States. doi:10.1126/science.aat7070.
@article{osti_1484839,
title = {Room-temperature cycling of metal fluoride electrodes: Liquid electrolytes for high-energy fluoride ion cells},
author = {Davis, Victoria K. and Bates, Christopher M. and Omichi, Kaoru and Savoie, Brett M. and Momčilović, Nebojša and Xu, Qingmin and Wolf, William J. and Webb, Michael A. and Billings, Keith J. and Chou, Nam Hawn and Alayoglu, Selim and McKenney, Ryan K. and Darolles, Isabelle M. and Nair, Nanditha G. and Hightower, Adrian and Rosenberg, Daniel and Ahmed, Musahid and Brooks, Christopher J. and Miller, III, Thomas F. and Grubbs, Robert H. and Jones, Simon C.},
abstractNote = {Fluoride ion batteries are potential “next-generation” electrochemical storage devices that offer high energy density. At present, such batteries are limited to operation at high temperatures because suitable fluoride ion–conducting electrolytes are known only in the solid state. We report a liquid fluoride ion–conducting electrolyte with high ionic conductivity, wide operating voltage, and robust chemical stability based on dry tetraalkylammonium fluoride salts in ether solvents. Pairing this liquid electrolyte with a copper–lanthanum trifluoride (Cu@LaF 3 ) core-shell cathode, we demonstrate reversible fluorination and defluorination reactions in a fluoride ion electrochemical cell cycled at room temperature. Fluoride ion–mediated electrochemistry offers a pathway toward developing capacities beyond that of lithium ion technology.},
doi = {10.1126/science.aat7070},
journal = {Science},
number = 6419,
volume = 362,
place = {United States},
year = {2018},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1126/science.aat7070

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Cited by: 19 works
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