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Title: Enabling selective zinc-ion intercalation by a eutectic electrolyte for practical anodeless zinc batteries

Abstract

Abstract Two major challenges hinder the advance of aqueous zinc metal batteries for sustainable stationary storage: (1) achieving predominant Zn-ion (de)intercalation at the oxide cathode by suppressing adventitious proton co-intercalation and dissolution, and (2) simultaneously overcoming Zn dendrite growth at the anode that triggers parasitic electrolyte reactions. Here, we reveal the competition between Zn 2+ vs proton intercalation chemistry of a typical oxide cathode using ex-situ/ operando techniques, and alleviate side reactions by developing a cost-effective and non-flammable hybrid eutectic electrolyte. A fully hydrated Zn 2+ solvation structure facilitates fast charge transfer at the solid/electrolyte interface, enabling dendrite-free Zn plating/stripping with a remarkably high average coulombic efficiency of 99.8% at commercially relevant areal capacities of 4 mAh cm −2 and function up to 1600 h at 8 mAh cm −2 . By concurrently stabilizing Zn redox at both electrodes, we achieve a new benchmark in Zn-ion battery performance of 4 mAh cm −2 anode-free cells that retain 85% capacity over 100 cycles at 25 °C. Using this eutectic-design electrolyte, Zn | |Iodine full cells are further realized with 86% capacity retention over 2500 cycles. The approach represents a new avenue for long-duration energy storage.

Authors:
ORCiD logo; ; ORCiD logo; ; ; ORCiD logo; ; ORCiD logo
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1975427
Alternate Identifier(s):
OSTI ID: 2229346
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Published Article
Journal Name:
Nature Communications
Additional Journal Information:
Journal Name: Nature Communications Journal Volume: 14 Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United Kingdom
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Li, Chang, Kingsbury, Ryan, Thind, Arashdeep Singh, Shyamsunder, Abhinandan, Fister, Timothy T., Klie, Robert F., Persson, Kristin A., and Nazar, Linda F. Enabling selective zinc-ion intercalation by a eutectic electrolyte for practical anodeless zinc batteries. United Kingdom: N. p., 2023. Web. doi:10.1038/s41467-023-38460-2.
Li, Chang, Kingsbury, Ryan, Thind, Arashdeep Singh, Shyamsunder, Abhinandan, Fister, Timothy T., Klie, Robert F., Persson, Kristin A., & Nazar, Linda F. Enabling selective zinc-ion intercalation by a eutectic electrolyte for practical anodeless zinc batteries. United Kingdom. https://doi.org/10.1038/s41467-023-38460-2
Li, Chang, Kingsbury, Ryan, Thind, Arashdeep Singh, Shyamsunder, Abhinandan, Fister, Timothy T., Klie, Robert F., Persson, Kristin A., and Nazar, Linda F. Sat . "Enabling selective zinc-ion intercalation by a eutectic electrolyte for practical anodeless zinc batteries". United Kingdom. https://doi.org/10.1038/s41467-023-38460-2.
@article{osti_1975427,
title = {Enabling selective zinc-ion intercalation by a eutectic electrolyte for practical anodeless zinc batteries},
author = {Li, Chang and Kingsbury, Ryan and Thind, Arashdeep Singh and Shyamsunder, Abhinandan and Fister, Timothy T. and Klie, Robert F. and Persson, Kristin A. and Nazar, Linda F.},
abstractNote = {Abstract Two major challenges hinder the advance of aqueous zinc metal batteries for sustainable stationary storage: (1) achieving predominant Zn-ion (de)intercalation at the oxide cathode by suppressing adventitious proton co-intercalation and dissolution, and (2) simultaneously overcoming Zn dendrite growth at the anode that triggers parasitic electrolyte reactions. Here, we reveal the competition between Zn 2+ vs proton intercalation chemistry of a typical oxide cathode using ex-situ/ operando techniques, and alleviate side reactions by developing a cost-effective and non-flammable hybrid eutectic electrolyte. A fully hydrated Zn 2+ solvation structure facilitates fast charge transfer at the solid/electrolyte interface, enabling dendrite-free Zn plating/stripping with a remarkably high average coulombic efficiency of 99.8% at commercially relevant areal capacities of 4 mAh cm −2 and function up to 1600 h at 8 mAh cm −2 . By concurrently stabilizing Zn redox at both electrodes, we achieve a new benchmark in Zn-ion battery performance of 4 mAh cm −2 anode-free cells that retain 85% capacity over 100 cycles at 25 °C. Using this eutectic-design electrolyte, Zn | |Iodine full cells are further realized with 86% capacity retention over 2500 cycles. The approach represents a new avenue for long-duration energy storage.},
doi = {10.1038/s41467-023-38460-2},
journal = {Nature Communications},
number = 1,
volume = 14,
place = {United Kingdom},
year = {Sat May 27 00:00:00 EDT 2023},
month = {Sat May 27 00:00:00 EDT 2023}
}

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