Show simple item record

dc.contributor.authorAbbas, Syed Ali
dc.contributor.authorIbrahem, Mohammed Aziz
dc.contributor.authorHu, Lung-hao
dc.contributor.authorLin, Chia-Nan
dc.contributor.authorFang, Jason
dc.contributor.authorBoopathi, Karunakara Moorthy
dc.contributor.authorWang, Pen-Cheng
dc.contributor.authorLi, Lain-Jong
dc.contributor.authorChu, Chih Wei
dc.date.accessioned2016-05-31T12:13:21Z
dc.date.available2016-05-31T12:13:21Z
dc.date.issued2016
dc.identifier.citationBifunctional separator as a polysulfide mediator for highly stable Li-S batteries 2016 J. Mater. Chem. A
dc.identifier.issn2050-7488
dc.identifier.issn2050-7496
dc.identifier.doi10.1039/C6TA02272C
dc.identifier.urihttp://hdl.handle.net/10754/611226
dc.description.abstractThe shuttling process involving lithium polysulfides is one of the major factors responsible for the degradation in capacity of lithium–sulfur batteries (LSBs). Herein, we demonstrate a novel and simple strategy—using a bifunctional separator, prepared by spraying poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) on pristine separator—to obtain long-cycle LSBs. The negatively charged SO3– groups present in PSS act as an electrostatic shield for soluble lithium polysulfides through mutual coulombic repulsion, whereas PEDOT provides chemical interactions with insoluble polysulfides (Li2S, Li2S2). The dual shielding effect can provide an efficient protection from the shuttling phenomenon by confining lithium polysulfides to the cathode side of the battery. Moreover, coating with PEDOT:PSS transforms the surface of the separator from hydrophobic to hydrophilic, thereby improving the electrochemical performance. We observed an ultralow decay of 0.0364% per cycle when we ran the battery for 1000 cycles at 0.25 C—far superior to that of the pristine separator and one of the lowest recorded values reported at a low current density. We examined the versatility of our separator by preparing a flexible battery that functioned well under various stress conditions; it displayed flawless performance. Accordingly, this economical and simple strategy appears to be an ideal platform for commercialization of LSBs.
dc.description.sponsorshipDr. Chu thanks the Ministry of Science and Technology (MOST) of Taiwan (103-3111-Y-001- 032) and the Career Development Award of Academia Sinica, Taiwan (103-CDA-M01), for financial support.
dc.language.isoen
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2016/TA/C6TA02272C
dc.rightsArchived with thanks to J. Mater. Chem. A
dc.titleBifunctional separator as a polysulfide mediator for highly stable Li-S batteries
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of Materials Chemistry A
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Engineering and Systems Science, National Tsing Hua University. Hsinchu 30013, Taiwan
dc.contributor.institutionNano Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, National Tsing Hua University, Taiwan
dc.contributor.institutionResearch Center of Applied Sciences, Academia Sinica Taipei 115, Taiwan
dc.contributor.institutionSouthern Taiwan University of Science and Technology, Tainan, 710, Taiwan
dc.contributor.institutionMaterial and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu, 31040, Taiwan.
dc.contributor.institutionDepartment of Physics, College of Science, University of Duhok, Duhok, Kurdistan region, Iraq.
dc.contributor.institutionCollege of Engineering, Chang Gung University, Tao-Yuan 333 , Taiwan
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personLi, Lain-Jong
refterms.dateFOA2017-05-24T00:00:00Z


Files in this item

Thumbnail
Name:
c6ta02272c.pdf
Size:
1.756Mb
Format:
PDF
Description:
Accepted Manuscript
Thumbnail
Name:
c6ta02272c1.pdf
Size:
1.211Mb
Format:
PDF
Description:
Supplemental files

This item appears in the following Collection(s)

Show simple item record