DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Soohyun | ko |
dc.contributor.author | Choi, Junghoon | ko |
dc.contributor.author | Choi, Chanyong | ko |
dc.contributor.author | Heo, Jiyun | ko |
dc.contributor.author | Kim, Dae Woo | ko |
dc.contributor.author | Lee, Jang Yong | ko |
dc.contributor.author | Hong, Young Taik | ko |
dc.contributor.author | Jung, Hee-Tae | ko |
dc.contributor.author | Kim, Hee-Tak | ko |
dc.date.accessioned | 2018-07-24T02:39:26Z | - |
dc.date.available | 2018-07-24T02:39:26Z | - |
dc.date.created | 2018-07-10 | - |
dc.date.created | 2018-07-10 | - |
dc.date.created | 2018-07-10 | - |
dc.date.issued | 2018-06 | - |
dc.identifier.citation | NANO LETTERS, v.18, no.6, pp.3962 - 3968 | - |
dc.identifier.issn | 1530-6984 | - |
dc.identifier.uri | http://hdl.handle.net/10203/244301 | - |
dc.description.abstract | The laminated structure of graphene oxide (GO) membranes provides exceptional ion-separation properties due to the regular interlayer spacing (d) between laminate layers. However, a larger effective pore size of the laminate immersed in water (similar to 11.1 angstrom) than the hydrated diameter of vanadium ions (>6.0 angstrom) prevents its use in vanadium redox-flow batteries (VRFB). In this work, we report an ion-selective graphene oxide framework (GOF) with a d tuned by cross-linking the GO nanosheets. Its effective pore size (similar to 5.9 angstrom) excludes vanadium ions by size but allows proton conduction. The GOF membrane is employed as a protective layer to address the poor chemical stability of sulfonated poly(arylene ether sulfone) (SPAES) membranes against VO2+ in VRFB. By effectively blocking vanadium ions, the GOF/SPAES membrane exhibits vanadium-ion permeability 4.2 times lower and a durability 5 times longer than that of the pristine SPAES membrane. Moreover, the VRFB with the GOF/SPAES membrane achieves an energy efficiency of 89% at 80 mA cm(-2) and a capacity retention of 88% even after 400 cycles, far exceeding results for Nafion 115 and demonstrating its practical applicability for VRFB. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Pore-Size-Tuned Graphene Oxide Frameworks as Ion-Selective and Protective Layers on Hydrocarbon Membranes for Vanadium Redox-Flow Batteries | - |
dc.type | Article | - |
dc.identifier.wosid | 000435524300091 | - |
dc.identifier.scopusid | 2-s2.0-85046684822 | - |
dc.type.rims | ART | - |
dc.citation.volume | 18 | - |
dc.citation.issue | 6 | - |
dc.citation.beginningpage | 3962 | - |
dc.citation.endingpage | 3968 | - |
dc.citation.publicationname | NANO LETTERS | - |
dc.identifier.doi | 10.1021/acs.nanolett.8b01429 | - |
dc.contributor.localauthor | Jung, Hee-Tae | - |
dc.contributor.localauthor | Kim, Hee-Tak | - |
dc.contributor.nonIdAuthor | Kim, Soohyun | - |
dc.contributor.nonIdAuthor | Heo, Jiyun | - |
dc.contributor.nonIdAuthor | Lee, Jang Yong | - |
dc.contributor.nonIdAuthor | Hong, Young Taik | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Graphene oxide framework membranes | - |
dc.subject.keywordAuthor | vanadium redox-flow batteries | - |
dc.subject.keywordAuthor | pore-size exclusions | - |
dc.subject.keywordAuthor | hydrocarbon membranes | - |
dc.subject.keywordAuthor | chemical stabilities | - |
dc.subject.keywordPlus | LITHIUM-SULFUR BATTERIES | - |
dc.subject.keywordPlus | RESEARCH-AND-DEVELOPMENT | - |
dc.subject.keywordPlus | AB-INITIO | - |
dc.subject.keywordPlus | SEPARATION | - |
dc.subject.keywordPlus | PROTON | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | FUNCTIONALIZATION | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | TRANSPORT | - |
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