File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1039/c6ta02272c
- Scopus: eid_2-s2.0-84975081923
- WOS: WOS:000378946700038
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Bifunctional separator as a polysulfide mediator for highly stable Li-S batteries
Title | Bifunctional separator as a polysulfide mediator for highly stable Li-S batteries |
---|---|
Authors | |
Issue Date | 2016 |
Citation | Journal of Materials Chemistry A, 2016, v. 4, n. 24, p. 9661-9669 How to Cite? |
Abstract | The 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 a pristine separator - to obtain long-cycle LSBs. The negatively charged SO 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 (Li S, Li S ). 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 0.25C - 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. 3 2 2 2 - |
Persistent Identifier | http://hdl.handle.net/10722/298158 |
ISSN | 2021 Impact Factor: 14.511 2020 SCImago Journal Rankings: 3.637 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Abbas, Syed Ali | - |
dc.contributor.author | Ibrahem, Mohammad Aziz | - |
dc.contributor.author | Hu, Lung Hao | - |
dc.contributor.author | Lin, Chia Nan | - |
dc.contributor.author | Fang, Jason | - |
dc.contributor.author | Boopathi, Karunakara Moorthy | - |
dc.contributor.author | Wang, Pen Cheng | - |
dc.contributor.author | Li, Lain Jong | - |
dc.contributor.author | Chu, Chih Wei | - |
dc.date.accessioned | 2021-04-08T03:07:48Z | - |
dc.date.available | 2021-04-08T03:07:48Z | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | Journal of Materials Chemistry A, 2016, v. 4, n. 24, p. 9661-9669 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/10722/298158 | - |
dc.description.abstract | The 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 a pristine separator - to obtain long-cycle LSBs. The negatively charged SO 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 (Li S, Li S ). 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 0.25C - 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. 3 2 2 2 - | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of Materials Chemistry A | - |
dc.title | Bifunctional separator as a polysulfide mediator for highly stable Li-S batteries | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1039/c6ta02272c | - |
dc.identifier.scopus | eid_2-s2.0-84975081923 | - |
dc.identifier.volume | 4 | - |
dc.identifier.issue | 24 | - |
dc.identifier.spage | 9661 | - |
dc.identifier.epage | 9669 | - |
dc.identifier.eissn | 2050-7496 | - |
dc.identifier.isi | WOS:000378946700038 | - |
dc.identifier.issnl | 2050-7496 | - |