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

Handle URI:
http://hdl.handle.net/10754/598588
Title:
Improving the Performance of Lithium–Sulfur Batteries by Conductive Polymer Coating
Authors:
Yang, Yuan; Yu, Guihua; Cha, Judy J.; Wu, Hui; Vosgueritchian, Michael; Yao, Yan; Bao, Zhenan; Cui, Yi
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.
Citation:
Yang Y, Yu G, Cha JJ, Wu H, Vosgueritchian M, et al. (2011) Improving the Performance of Lithium–Sulfur Batteries by Conductive Polymer Coating. ACS Nano 5: 9187–9193. Available: http://dx.doi.org/10.1021/nn203436j.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Nano
KAUST Grant Number:
KUS-I1-001-12
Issue Date:
22-Nov-2011
DOI:
10.1021/nn203436j
PubMed ID:
21995642
Type:
Article
ISSN:
1936-0851; 1936-086X
Sponsors:
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.
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Full metadata record

DC FieldValue Language
dc.contributor.authorYang, Yuanen
dc.contributor.authorYu, Guihuaen
dc.contributor.authorCha, Judy J.en
dc.contributor.authorWu, Huien
dc.contributor.authorVosgueritchian, Michaelen
dc.contributor.authorYao, Yanen
dc.contributor.authorBao, Zhenanen
dc.contributor.authorCui, Yien
dc.date.accessioned2016-02-25T13:32:39Zen
dc.date.available2016-02-25T13:32:39Zen
dc.date.issued2011-11-22en
dc.identifier.citationYang Y, Yu G, Cha JJ, Wu H, Vosgueritchian M, et al. (2011) Improving the Performance of Lithium–Sulfur Batteries by Conductive Polymer Coating. ACS Nano 5: 9187–9193. Available: http://dx.doi.org/10.1021/nn203436j.en
dc.identifier.issn1936-0851en
dc.identifier.issn1936-086Xen
dc.identifier.pmid21995642en
dc.identifier.doi10.1021/nn203436jen
dc.identifier.urihttp://hdl.handle.net/10754/598588en
dc.description.abstractRechargeable 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.en
dc.description.sponsorshipY.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.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleImproving the Performance of Lithium–Sulfur Batteries by Conductive Polymer Coatingen
dc.typeArticleen
dc.identifier.journalACS Nanoen
dc.contributor.institutionStanford University, Palo Alto, United Statesen
dc.contributor.institutionStanford Linear Accelerator Center, Menlo Park, United Statesen
kaust.grant.numberKUS-I1-001-12en

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