Improving the Performance of Lithium–Sulfur Batteries by Conductive Polymer Coating

Yuan Yang; Guihua Yu; Judy J. Cha; Hui Wu; Michael Vosgueritchian; Yan Yao; Zhenan Bao; Yi Cui

doi:10.1021/nn203436j

Improving the Performance of Lithium–Sulfur Batteries by Conductive Polymer Coating

Yuan Yang, Guihua Yu, Judy J. Cha, Hui Wu, Michael Vosgueritchian, Yan Yao, Zhenan Bao, Yi Cui

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793 Scopus citations

Abstract

Rechargeable lithium-sulfur (Li-S) batteries hold great potential for next-generation high-performance energy storage systems because of their high theoretical specific energy, low materials cost, and environmental safety. One of the major obstacles for its commercialization is the rapid capacity fading due to polysulfide dissolution and uncontrolled redeposition. Various porous carbon structures have been used to improve the performance of Li-S batteries, as polysulfides could be trapped inside the carbon matrix. However, polysulfides still diffuse out for a prolonged time if there is no effective capping layer surrounding the carbon/sulfur particles. Here we explore the application of conducting polymer to minimize the diffusion of polysulfides out of the mesoporous carbon matrix by coating poly(3,4-ethylenedioxythiophene)- poly(styrene sulfonate) (PEDOT:PSS) onto mesoporous carbon/sulfur particles. After surface coating, coulomb efficiency of the sulfur electrode was improved from 93% to 97%, and capacity decay was reduced from 40%/100 cycles to 15%/100 cycles. Moreover, the discharge capacity with the polymer coating was ∼10% higher than the bare counterpart, with an initial discharge capacity of 1140 mAh/g and a stable discharge capacity of >600 mAh/g after 150 cycles at C/5 rate. We believe that this conductive polymer coating method represents an exciting direction for enhancing the device performance of Li-S batteries and can be applicable to other electrode materials in lithium ion batteries. © 2011 American Chemical Society.

Original language	English (US)
Pages (from-to)	9187-9193
Number of pages	7
Journal	ACS Nano
Volume	5
Issue number	11
DOIs	https://doi.org/10.1021/nn203436j
State	Published - Oct 26 2011
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-I1-001-12
Acknowledgements: Y.Y. acknowledges support from a Stanford Graduate Fellowship. Y.C. and Z.B. acknowledge the funding support from the Precourt Institute for Energy at Stanford University. Y.C. also acknowledges the funding support from the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS-I1-001-12). A portion of this work was supported by the Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under contract DE-AC02-76SF00515 through the SLAC National Accelerator Laboratory LDRD project.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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10.1021/nn203436j

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title = "Improving the Performance of Lithium–Sulfur Batteries by Conductive Polymer Coating",

abstract = "Rechargeable lithium-sulfur (Li-S) batteries hold great potential for next-generation high-performance energy storage systems because of their high theoretical specific energy, low materials cost, and environmental safety. One of the major obstacles for its commercialization is the rapid capacity fading due to polysulfide dissolution and uncontrolled redeposition. Various porous carbon structures have been used to improve the performance of Li-S batteries, as polysulfides could be trapped inside the carbon matrix. However, polysulfides still diffuse out for a prolonged time if there is no effective capping layer surrounding the carbon/sulfur particles. Here we explore the application of conducting polymer to minimize the diffusion of polysulfides out of the mesoporous carbon matrix by coating poly(3,4-ethylenedioxythiophene)- poly(styrene sulfonate) (PEDOT:PSS) onto mesoporous carbon/sulfur particles. After surface coating, coulomb efficiency of the sulfur electrode was improved from 93% to 97%, and capacity decay was reduced from 40%/100 cycles to 15%/100 cycles. Moreover, the discharge capacity with the polymer coating was ∼10% higher than the bare counterpart, with an initial discharge capacity of 1140 mAh/g and a stable discharge capacity of >600 mAh/g after 150 cycles at C/5 rate. We believe that this conductive polymer coating method represents an exciting direction for enhancing the device performance of Li-S batteries and can be applicable to other electrode materials in lithium ion batteries. {\textcopyright} 2011 American Chemical Society.",

author = "Yuan Yang and Guihua Yu and Cha, {Judy J.} and Hui Wu and Michael Vosgueritchian and Yan Yao and Zhenan Bao and Yi Cui",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-I1-001-12 Acknowledgements: Y.Y. acknowledges support from a Stanford Graduate Fellowship. Y.C. and Z.B. acknowledge the funding support from the Precourt Institute for Energy at Stanford University. Y.C. also acknowledges the funding support from the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS-I1-001-12). A portion of this work was supported by the Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under contract DE-AC02-76SF00515 through the SLAC National Accelerator Laboratory LDRD project. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

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T1 - Improving the Performance of Lithium–Sulfur Batteries by Conductive Polymer Coating

AU - Yang, Yuan

AU - Yu, Guihua

AU - Cha, Judy J.

AU - Wu, Hui

AU - Vosgueritchian, Michael

AU - Yao, Yan

AU - Bao, Zhenan

AU - Cui, Yi

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-I1-001-12 Acknowledgements: Y.Y. acknowledges support from a Stanford Graduate Fellowship. Y.C. and Z.B. acknowledge the funding support from the Precourt Institute for Energy at Stanford University. Y.C. also acknowledges the funding support from the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS-I1-001-12). A portion of this work was supported by the Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under contract DE-AC02-76SF00515 through the SLAC National Accelerator Laboratory LDRD project. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2011/10/26

Y1 - 2011/10/26

N2 - Rechargeable lithium-sulfur (Li-S) batteries hold great potential for next-generation high-performance energy storage systems because of their high theoretical specific energy, low materials cost, and environmental safety. One of the major obstacles for its commercialization is the rapid capacity fading due to polysulfide dissolution and uncontrolled redeposition. Various porous carbon structures have been used to improve the performance of Li-S batteries, as polysulfides could be trapped inside the carbon matrix. However, polysulfides still diffuse out for a prolonged time if there is no effective capping layer surrounding the carbon/sulfur particles. Here we explore the application of conducting polymer to minimize the diffusion of polysulfides out of the mesoporous carbon matrix by coating poly(3,4-ethylenedioxythiophene)- poly(styrene sulfonate) (PEDOT:PSS) onto mesoporous carbon/sulfur particles. After surface coating, coulomb efficiency of the sulfur electrode was improved from 93% to 97%, and capacity decay was reduced from 40%/100 cycles to 15%/100 cycles. Moreover, the discharge capacity with the polymer coating was ∼10% higher than the bare counterpart, with an initial discharge capacity of 1140 mAh/g and a stable discharge capacity of >600 mAh/g after 150 cycles at C/5 rate. We believe that this conductive polymer coating method represents an exciting direction for enhancing the device performance of Li-S batteries and can be applicable to other electrode materials in lithium ion batteries. © 2011 American Chemical Society.

AB - Rechargeable lithium-sulfur (Li-S) batteries hold great potential for next-generation high-performance energy storage systems because of their high theoretical specific energy, low materials cost, and environmental safety. One of the major obstacles for its commercialization is the rapid capacity fading due to polysulfide dissolution and uncontrolled redeposition. Various porous carbon structures have been used to improve the performance of Li-S batteries, as polysulfides could be trapped inside the carbon matrix. However, polysulfides still diffuse out for a prolonged time if there is no effective capping layer surrounding the carbon/sulfur particles. Here we explore the application of conducting polymer to minimize the diffusion of polysulfides out of the mesoporous carbon matrix by coating poly(3,4-ethylenedioxythiophene)- poly(styrene sulfonate) (PEDOT:PSS) onto mesoporous carbon/sulfur particles. After surface coating, coulomb efficiency of the sulfur electrode was improved from 93% to 97%, and capacity decay was reduced from 40%/100 cycles to 15%/100 cycles. Moreover, the discharge capacity with the polymer coating was ∼10% higher than the bare counterpart, with an initial discharge capacity of 1140 mAh/g and a stable discharge capacity of >600 mAh/g after 150 cycles at C/5 rate. We believe that this conductive polymer coating method represents an exciting direction for enhancing the device performance of Li-S batteries and can be applicable to other electrode materials in lithium ion batteries. © 2011 American Chemical Society.

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JO - ACS Nano

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Improving the Performance of Lithium–Sulfur Batteries by Conductive Polymer Coating

Abstract

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