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Title: Effective Suppression of the Polysulfide Shuttle Effect in Lithium–Sulfur Batteries by Implementing rGO–PEDOT:PSS-Coated Separators via Air-Controlled Electrospray

Abstract

Lithium–sulfur (Li–S) batteries have been earning significant attention because of their high energy density and cost efficiency. Albeit these outstanding qualities, the polysulfide shuttling effect and low electrical conductivity of the sulfur active material in this battery chemistry results in poor cycling performance. In an attempt to overcome these problems, a hybrid structure of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) and reduced graphene oxide was developed and coated on the surface of a conventional separator using air-controlled electrospray. Implementing these coated separators in Li–S batteries led to lower polarization and stymied the polysulfide shuttling effect through the combining effects of electrostatic, physical, and chemical interactions. Our results reveal that the capacity and rate capacity are drastically improved via coating the separator, leading to more than twice the capacity of over 800 mA h g–1 after 100 cycles at 0.5 C rate, when it is compared to those with the pristine separator. Overall, this hybrid coating material shows great promise in enhancing the current Li–S battery technology.

Authors:
; ; ; ; ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; National Science Foundation (NSF); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1484331
Alternate Identifier(s):
OSTI ID: 1508794; OSTI ID: 1874092
Grant/Contract Number:  
EE0008193; DMR 1120296
Resource Type:
Published Article
Journal Name:
ACS Omega
Additional Journal Information:
Journal Name: ACS Omega Journal Volume: 3 Journal Issue: 12; Journal ID: ISSN 2470-1343
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; 25 ENERGY STORAGE; Li-Sulfur Batteries; Coated Separators; reduced Graphene Oxide; Conducting Polymer; Batteries; Electrochemical cells; Electrodes; Lithium; Sulfur

Citation Formats

Lee, Jin Hong, Kang, Jisoo, Kim, Seung-Wan, Halim, Willy, Frey, Margaret W., and Joo, Yong Lak. Effective Suppression of the Polysulfide Shuttle Effect in Lithium–Sulfur Batteries by Implementing rGO–PEDOT:PSS-Coated Separators via Air-Controlled Electrospray. United States: N. p., 2018. Web. doi:10.1021/acsomega.8b02551.
Lee, Jin Hong, Kang, Jisoo, Kim, Seung-Wan, Halim, Willy, Frey, Margaret W., & Joo, Yong Lak. Effective Suppression of the Polysulfide Shuttle Effect in Lithium–Sulfur Batteries by Implementing rGO–PEDOT:PSS-Coated Separators via Air-Controlled Electrospray. United States. https://doi.org/10.1021/acsomega.8b02551
Lee, Jin Hong, Kang, Jisoo, Kim, Seung-Wan, Halim, Willy, Frey, Margaret W., and Joo, Yong Lak. Mon . "Effective Suppression of the Polysulfide Shuttle Effect in Lithium–Sulfur Batteries by Implementing rGO–PEDOT:PSS-Coated Separators via Air-Controlled Electrospray". United States. https://doi.org/10.1021/acsomega.8b02551.
@article{osti_1484331,
title = {Effective Suppression of the Polysulfide Shuttle Effect in Lithium–Sulfur Batteries by Implementing rGO–PEDOT:PSS-Coated Separators via Air-Controlled Electrospray},
author = {Lee, Jin Hong and Kang, Jisoo and Kim, Seung-Wan and Halim, Willy and Frey, Margaret W. and Joo, Yong Lak},
abstractNote = {Lithium–sulfur (Li–S) batteries have been earning significant attention because of their high energy density and cost efficiency. Albeit these outstanding qualities, the polysulfide shuttling effect and low electrical conductivity of the sulfur active material in this battery chemistry results in poor cycling performance. In an attempt to overcome these problems, a hybrid structure of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) and reduced graphene oxide was developed and coated on the surface of a conventional separator using air-controlled electrospray. Implementing these coated separators in Li–S batteries led to lower polarization and stymied the polysulfide shuttling effect through the combining effects of electrostatic, physical, and chemical interactions. Our results reveal that the capacity and rate capacity are drastically improved via coating the separator, leading to more than twice the capacity of over 800 mA h g–1 after 100 cycles at 0.5 C rate, when it is compared to those with the pristine separator. Overall, this hybrid coating material shows great promise in enhancing the current Li–S battery technology.},
doi = {10.1021/acsomega.8b02551},
journal = {ACS Omega},
number = 12,
volume = 3,
place = {United States},
year = {Mon Dec 03 00:00:00 EST 2018},
month = {Mon Dec 03 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1021/acsomega.8b02551

Citation Metrics:
Cited by: 36 works
Citation information provided by
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Figures / Tables:

Figure 1 Figure 1: (a) Schematic cell configuration of the Li−S batteries with the rGO−PEDOT:PSS-coated separator. Digital photographs of the as-prepared rGO−PEDOT:PSS-coated separator: (b) front side, (c) back side, and (d) folded. SEM image of (e) the Celgard separator and (f) top surface and (g) cross-section of rGO−PEDOT:PSS-coated separator.

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.