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Title: High-performance all-solid-state batteries enabled by salt bonding to perovskite in poly(ethylene oxide)

Abstract

Flexible and low-cost poly(ethylene oxide) (PEO)-based electrolytes are promising for all-solid-state Li-metal batteries because of their compatibility with a metallic lithium anode. However, the low room-temperature Li-ion conductivity of PEO solid electrolytes and severe lithium-dendrite growth limit their application in high-energy Li-metal batteries. Here we prepared a PEO/perovskite Li 3/8 Sr 7/16 Ta 3/4 Zr 1/4 O 3 composite electrolyte with a Li-ion conductivity of 5.4 × 10 −5 and 3.5 × 10 −4 S cm −1 at 25 and 45 °C, respectively; the strong interaction between the F of TFSI (bis-trifluoromethanesulfonimide) and the surface Ta 5+ of the perovskite improves the Li-ion transport at the PEO/perovskite interface. A symmetric Li/composite electrolyte/Li cell shows an excellent cyclability at a high current density up to 0.6 mA cm −2 . A solid electrolyte interphase layer formed in situ between the metallic lithium anode and the composite electrolyte suppresses lithium-dendrite formation and growth. All-solid-state Li|LiFePO 4 and high-voltage Li|LiNi 0.8 Mn 0.1 Co 0.1 O 2 batteries with the composite electrolyte have an impressive performance with high Coulombic efficiencies, small overpotentials, and good cycling stability.

Authors:
ORCiD logo; ; ; ; ; ORCiD logo; ; ORCiD logo
Publication Date:
Research Org.:
Univ. of Texas, Austin, TX (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Science Foundation (NSF); Welch Foundation
OSTI Identifier:
1559398
Alternate Identifier(s):
OSTI ID: 1614047
Grant/Contract Number:  
EE000762; UTA17-001111; EE0007762; F-1959-20180324; DMR-1808517; DMR-1644779
Resource Type:
Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 116 Journal Issue: 38; Journal ID: ISSN 0027-8424
Publisher:
National Academy of Sciences
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; polymer electrolyte; high conductivity; solid-state batteries; high-voltage cathode

Citation Formats

Xu, Henghui, Chien, Po-Hsiu, Shi, Jianjian, Li, Yutao, Wu, Nan, Liu, Yuanyue, Hu, Yan-Yan, and Goodenough, John B. High-performance all-solid-state batteries enabled by salt bonding to perovskite in poly(ethylene oxide). United States: N. p., 2019. Web. doi:10.1073/pnas.1907507116.
Xu, Henghui, Chien, Po-Hsiu, Shi, Jianjian, Li, Yutao, Wu, Nan, Liu, Yuanyue, Hu, Yan-Yan, & Goodenough, John B. High-performance all-solid-state batteries enabled by salt bonding to perovskite in poly(ethylene oxide). United States. https://doi.org/10.1073/pnas.1907507116
Xu, Henghui, Chien, Po-Hsiu, Shi, Jianjian, Li, Yutao, Wu, Nan, Liu, Yuanyue, Hu, Yan-Yan, and Goodenough, John B. Thu . "High-performance all-solid-state batteries enabled by salt bonding to perovskite in poly(ethylene oxide)". United States. https://doi.org/10.1073/pnas.1907507116.
@article{osti_1559398,
title = {High-performance all-solid-state batteries enabled by salt bonding to perovskite in poly(ethylene oxide)},
author = {Xu, Henghui and Chien, Po-Hsiu and Shi, Jianjian and Li, Yutao and Wu, Nan and Liu, Yuanyue and Hu, Yan-Yan and Goodenough, John B.},
abstractNote = {Flexible and low-cost poly(ethylene oxide) (PEO)-based electrolytes are promising for all-solid-state Li-metal batteries because of their compatibility with a metallic lithium anode. However, the low room-temperature Li-ion conductivity of PEO solid electrolytes and severe lithium-dendrite growth limit their application in high-energy Li-metal batteries. Here we prepared a PEO/perovskite Li 3/8 Sr 7/16 Ta 3/4 Zr 1/4 O 3 composite electrolyte with a Li-ion conductivity of 5.4 × 10 −5 and 3.5 × 10 −4 S cm −1 at 25 and 45 °C, respectively; the strong interaction between the F − of TFSI − (bis-trifluoromethanesulfonimide) and the surface Ta 5+ of the perovskite improves the Li-ion transport at the PEO/perovskite interface. A symmetric Li/composite electrolyte/Li cell shows an excellent cyclability at a high current density up to 0.6 mA cm −2 . A solid electrolyte interphase layer formed in situ between the metallic lithium anode and the composite electrolyte suppresses lithium-dendrite formation and growth. All-solid-state Li|LiFePO 4 and high-voltage Li|LiNi 0.8 Mn 0.1 Co 0.1 O 2 batteries with the composite electrolyte have an impressive performance with high Coulombic efficiencies, small overpotentials, and good cycling stability.},
doi = {10.1073/pnas.1907507116},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 38,
volume = 116,
place = {United States},
year = {2019},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1073/pnas.1907507116

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Cited by: 145 works
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