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Title: Hybrid Lithium-Sulfur Batteries with an Advanced Gel Cathode and Stabilized Lithium-Metal Anode

Abstract

The insulating nature of sulfur, polysulfide shuttle effect, and lithium metal deterioration cause a decrease in practical energy density and fast capacity fade in lithium-sulfur batteries. Here, we present an integrated strategy for the development of hybrid Li-S batteries based on a gel sulfur cathode, a solid electrolyte, and a protective anolyte composed of highly-concentrated salt electrolyte containing mixed additives. The dense solid electrolyte completely blocks polysulfide diffusion, and also makes it possible to investigate the cathode and anode independently. This gel cathode effectively traps the polysulfide active material while maintaining a low electrolyte to sulfur ratio (E/S) of 5.2 mL/g. The anolyte effectively protects the Li metal and suppresses the consumption of liquid electrolyte, enabling stable long-term cycling for over 700 hours in Li symmetric cells. This advanced design can simultaneously suppress the polysulfide shuttle, protect Li metal, and reduce the liquid electrolyte usage. The assembled hybrid batteries exhibit remarkably stable cycling performance over 300 cycles with high capacity. Finally, surface-sensitive techniques were carried out to directly visualize and to probe the interphase formed on the surface of the LAGP pellet, which may help stabilize the solid-liquid interface.

Authors:
 [1];  [1]; ORCiD logo [1]
  1. Univ. of Texas, Austin, TX (United States). Materials Science and Engineering Program and Texas Materials Institute
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
OSTI Identifier:
1598233
Alternate Identifier(s):
OSTI ID: 1464429
Grant/Contract Number:  
SC0005397
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Volume: 8; Journal Issue: 23; Journal ID: ISSN 1614-6832
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE; gel cathodes; lithium protection; lithium‐sulfur batteries; polysulfide trapping

Citation Formats

Xu, Henghui, Wang, Shaofei, and Manthiram, Arumugam. Hybrid Lithium-Sulfur Batteries with an Advanced Gel Cathode and Stabilized Lithium-Metal Anode. United States: N. p., 2018. Web. doi:10.1002/aenm.201800813.
Xu, Henghui, Wang, Shaofei, & Manthiram, Arumugam. Hybrid Lithium-Sulfur Batteries with an Advanced Gel Cathode and Stabilized Lithium-Metal Anode. United States. https://doi.org/10.1002/aenm.201800813
Xu, Henghui, Wang, Shaofei, and Manthiram, Arumugam. Mon . "Hybrid Lithium-Sulfur Batteries with an Advanced Gel Cathode and Stabilized Lithium-Metal Anode". United States. https://doi.org/10.1002/aenm.201800813. https://www.osti.gov/servlets/purl/1598233.
@article{osti_1598233,
title = {Hybrid Lithium-Sulfur Batteries with an Advanced Gel Cathode and Stabilized Lithium-Metal Anode},
author = {Xu, Henghui and Wang, Shaofei and Manthiram, Arumugam},
abstractNote = {The insulating nature of sulfur, polysulfide shuttle effect, and lithium metal deterioration cause a decrease in practical energy density and fast capacity fade in lithium-sulfur batteries. Here, we present an integrated strategy for the development of hybrid Li-S batteries based on a gel sulfur cathode, a solid electrolyte, and a protective anolyte composed of highly-concentrated salt electrolyte containing mixed additives. The dense solid electrolyte completely blocks polysulfide diffusion, and also makes it possible to investigate the cathode and anode independently. This gel cathode effectively traps the polysulfide active material while maintaining a low electrolyte to sulfur ratio (E/S) of 5.2 mL/g. The anolyte effectively protects the Li metal and suppresses the consumption of liquid electrolyte, enabling stable long-term cycling for over 700 hours in Li symmetric cells. This advanced design can simultaneously suppress the polysulfide shuttle, protect Li metal, and reduce the liquid electrolyte usage. The assembled hybrid batteries exhibit remarkably stable cycling performance over 300 cycles with high capacity. Finally, surface-sensitive techniques were carried out to directly visualize and to probe the interphase formed on the surface of the LAGP pellet, which may help stabilize the solid-liquid interface.},
doi = {10.1002/aenm.201800813},
url = {https://www.osti.gov/biblio/1598233}, journal = {Advanced Energy Materials},
issn = {1614-6832},
number = 23,
volume = 8,
place = {United States},
year = {2018},
month = {5}
}

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Cited by: 6 works
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Works referenced in this record:

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journal, March 2016


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    Pristine or Highly Defective? Understanding the Role of Graphene Structure for Stable Lithium Metal Plating
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    High-performance all-solid-state batteries enabled by salt bonding to perovskite in poly(ethylene oxide)
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    Graphitic Mesoporous Carbon/Mn 7 C 3 as Polysulfide Host for High Rate Li-S Batteries
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