Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Aziz, Md. Abdul | ko |
dc.contributor.author | Shanmugam, Sangaraju | ko |
dc.date.accessioned | 2018-10-11T02:03:20Z | - |
dc.date.available | 2018-10-11T02:03:20Z | - |
dc.date.created | 2018-10-08 | - |
dc.date.issued | 2018-09 | - |
dc.identifier.citation | Journal of Materials Chemistry A, v.6, no.36, pp.17740 - 17750 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/9356 | - |
dc.description.abstract | We describe the fabrication of a new block copolymer, sulfonated poly(ether ketone sulfone) (SPEKS) decorated with sulfonated graphene oxide (sGO) as a potential proton-exchange composite membrane for all-vanadium redox flow batteries (VRBs). The simple design of the SPEKS/sGO composite membrane offers key advantages in VRBs relative to commercial Nafion® membrane. The SPEKS/sGO composite membrane exhibited significantly lower vanadium ion permeability, which resulted in an excellent ion selectivity (10.2 × 105 S min cm-3) in comparison with the pristine SPEKS (7.9 × 105 S min cm-3) and Nafion-212 (1.8 × 105 S min cm-3) membranes. As a result, the SPEKS/sGO composite membrane exhibited exceptional electrochemical performance in a VRB under a mixed-acid system. Further, the impressive cyclability with negligible capacity decay demonstrated the high chemical stability of the designed composite membrane for long-term operation. In addition, excellent battery performance with a Coulombic efficiency of 99.4% and energy efficiency of 82.5% was obtained for the SPEKS/sGO membrane compared with the Nafion-212 (CE, 89.6% and EE, 75.5%) and the pristine SPEKS (CE, 97.2% and EE, 74.7%) membranes in the VRB at 40 mA cm-2 current density. The VRB assembled with a SPEKS/sGO composite membrane had a lower self-discharge rate, retaining an open circuit voltage of 1.30 V for 395 h in comparison with the Nafion-212 (29 h) and pristine SPEKS (240 h) membranes. Therefore, given its remarkable electrochemical performance and improved chemical stability, the SPEKS/sGO composite membrane has good potential to be explored as a promising alternative for the Nafion® membrane currently extensively used in VRB applications. © 2018 The Royal Society of Chemistry. | - |
dc.language | English | - |
dc.publisher | Royal Society of Chemistry | - |
dc.title | Sulfonated graphene oxide-decorated block copolymer as a proton-exchange membrane: Improving the ion selectivity for all-vanadium redox flow batteries | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/c8ta06717a | - |
dc.identifier.wosid | 000448147200052 | - |
dc.identifier.scopusid | 2-s2.0-85053669254 | - |
dc.type.local | Article(Overseas) | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.citationVolume | 6 | - |
dc.identifier.citationNumber | 36 | - |
dc.identifier.citationStartPage | 17740 | - |
dc.identifier.citationEndPage | 17750 | - |
dc.identifier.citationTitle | Journal of Materials Chemistry A | - |
dc.type.journalArticle | Article | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordPlus | ETHER KETONE) MEMBRANES | - |
dc.subject.keywordPlus | LOW RELATIVE-HUMIDITY | - |
dc.subject.keywordPlus | METHANOL FUEL-CELLS | - |
dc.subject.keywordPlus | COMPOSITE MEMBRANES | - |
dc.subject.keywordPlus | HYBRID MEMBRANE | - |
dc.subject.keywordPlus | CONDUCTIVE MEMBRANE | - |
dc.subject.keywordPlus | IONOMERS | - |
dc.subject.keywordPlus | PENDANT | - |
dc.subject.keywordPlus | COST | - |
dc.contributor.affiliatedAuthor | Shanmugam, Sangaraju | - |
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