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Title: Room-Temperature Aluminum-Sulfur Batteries with a Lithium-Ion-Mediated Ionic Liquid Electrolyte

Abstract

Aluminum-sulfur (Al-S) chemistry is attractive for the development of future-generation electrochemical energy storage technologies. Yet, to date, only limited reversible Al-S chemistry has been demonstrated. This report demonstrates a highly reversible room-temperature Al-S battery with a lithium-ion (Li+-ion)-mediated ionic liquid electrolyte. Mechanistic studies with electrochemical and spectroscopic methodologies revealed that the enhancement in reversibility by Li+-ion mediation is attributed to the chemical reactivation of aluminum polysulfides and/or sulfide by Li+ during electrochemical cycling. The results obtained with X-ray photoelectron spectroscopy and density functional theory calculations suggest the presence of a Li3AlS3-like product with a mixture of Li2S- and Al2S3-like phases in the discharged sulfur cathode. With Li+-ion mediation, the cycle life of room-temperature Al-S batteries is greatly improved. The cell delivers an initial capacity of ~1,000 mA hr g-1 and maintains a capacity of up to 600 mA hr g-1 after 50 cycles.

Authors:
; ; ;
Publication Date:
Research Org.:
Univ. of Texas, Austin, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; Robert A. Welch Foundation
Contributing Org.:
Texas Advanced Computing Center (TACC)
OSTI Identifier:
1548739
Alternate Identifier(s):
OSTI ID: 1596650
Grant/Contract Number:  
SC0005397
Resource Type:
Published Article
Journal Name:
Chem
Additional Journal Information:
Journal Name: Chem Journal Volume: 4 Journal Issue: 3; Journal ID: ISSN 2451-9294
Publisher:
Cell Press, Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; aluminum-sulfur battery; ionic liquid electrolyte; Li+-ion mediation; electrochemical mechanism; density functional theory calculation

Citation Formats

Yu, Xingwen, Boyer, Mathew J., Hwang, Gyeong S., and Manthiram, Arumugam. Room-Temperature Aluminum-Sulfur Batteries with a Lithium-Ion-Mediated Ionic Liquid Electrolyte. United States: N. p., 2018. Web. doi:10.1016/j.chempr.2017.12.029.
Yu, Xingwen, Boyer, Mathew J., Hwang, Gyeong S., & Manthiram, Arumugam. Room-Temperature Aluminum-Sulfur Batteries with a Lithium-Ion-Mediated Ionic Liquid Electrolyte. United States. doi:10.1016/j.chempr.2017.12.029.
Yu, Xingwen, Boyer, Mathew J., Hwang, Gyeong S., and Manthiram, Arumugam. Thu . "Room-Temperature Aluminum-Sulfur Batteries with a Lithium-Ion-Mediated Ionic Liquid Electrolyte". United States. doi:10.1016/j.chempr.2017.12.029.
@article{osti_1548739,
title = {Room-Temperature Aluminum-Sulfur Batteries with a Lithium-Ion-Mediated Ionic Liquid Electrolyte},
author = {Yu, Xingwen and Boyer, Mathew J. and Hwang, Gyeong S. and Manthiram, Arumugam},
abstractNote = {Aluminum-sulfur (Al-S) chemistry is attractive for the development of future-generation electrochemical energy storage technologies. Yet, to date, only limited reversible Al-S chemistry has been demonstrated. This report demonstrates a highly reversible room-temperature Al-S battery with a lithium-ion (Li+-ion)-mediated ionic liquid electrolyte. Mechanistic studies with electrochemical and spectroscopic methodologies revealed that the enhancement in reversibility by Li+-ion mediation is attributed to the chemical reactivation of aluminum polysulfides and/or sulfide by Li+ during electrochemical cycling. The results obtained with X-ray photoelectron spectroscopy and density functional theory calculations suggest the presence of a Li3AlS3-like product with a mixture of Li2S- and Al2S3-like phases in the discharged sulfur cathode. With Li+-ion mediation, the cycle life of room-temperature Al-S batteries is greatly improved. The cell delivers an initial capacity of ~1,000 mA hr g-1 and maintains a capacity of up to 600 mA hr g-1 after 50 cycles.},
doi = {10.1016/j.chempr.2017.12.029},
journal = {Chem},
number = 3,
volume = 4,
place = {United States},
year = {2018},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.chempr.2017.12.029

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Cited by: 31 works
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Works referencing / citing this record:

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