Highly dispersible graphene oxide nanoflakes in pseudo-gel-polymer porous separators for boosting ion transportation
DC Field | Value | Language |
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dc.contributor.author | Kim, Jin Il | - |
dc.contributor.author | Cho, Jae Sang | - |
dc.contributor.author | Wang, Dong Hwan | - |
dc.contributor.author | Park, Jong Hyeok | - |
dc.date.available | 2020-07-23T05:23:22Z | - |
dc.date.issued | 2020-09 | - |
dc.identifier.issn | 0008-6223 | - |
dc.identifier.issn | 1873-3891 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/42196 | - |
dc.description.abstract | Gel-type polymer electrolytes have received considerable attention due to the battery explosion issue associated with volatile liquid-electrolyte-based lithium ion batteries (LIBs). However, the high ionic conductivity of gel-type polymer electrolytes originates from polymer swelling by the liquid electrolyte, and these materials inevitably have poor mechanical strength during device deformation. Here, we report structural gel-type polymer separators with highly porous and uniform morphology arising from the phase inversion of PVdF-HFP polymers with highly dispersible nanoscale graphene oxide nanoflake (GON). Via simple γ-ray irradiation of conventional graphene oxide solution, large 2D particles were cut into small 2D particles with a narrow size distribution, which in turn resulted in a dramatic change in solution transparency and particle dispersity. γ-ray-irradiated graphene oxide nanoflakes (γ-GON) with high dispersity are located inside the porous PVdF-HFP skeleton, inducing additional micron-sized pores of ∼8 μm in the composite membranes. The modified porous film showed both gel-polymer electrolyte-like (uptake of 1.7 times more liquid electrolyte than conventional polyethylene separator) and polymer separator-like behavior (maintenance of original porous structure after soaked with liquid electrolyte). As a result, this pseudo-gel-polymer separator with a tailored pore structure has uniform ion flux and enhanced interfacial properties with electrodes, contributing superior battery performance. © 2020 | - |
dc.format.extent | 9 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Elsevier Ltd | - |
dc.title | Highly dispersible graphene oxide nanoflakes in pseudo-gel-polymer porous separators for boosting ion transportation | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.carbon.2020.05.003 | - |
dc.identifier.bibliographicCitation | Carbon, v.166, pp 427 - 435 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000542442400013 | - |
dc.identifier.scopusid | 2-s2.0-85085645029 | - |
dc.citation.endPage | 435 | - |
dc.citation.startPage | 427 | - |
dc.citation.title | Carbon | - |
dc.citation.volume | 166 | - |
dc.type.docType | Article | - |
dc.publisher.location | 영국 | - |
dc.subject.keywordAuthor | Enhanced ion flux | - |
dc.subject.keywordAuthor | Gamma ray | - |
dc.subject.keywordAuthor | Gel electrolyte | - |
dc.subject.keywordAuthor | Lithium ion battery | - |
dc.subject.keywordAuthor | Separator | - |
dc.subject.keywordPlus | Composite membranes | - |
dc.subject.keywordPlus | Gamma rays | - |
dc.subject.keywordPlus | Graphene | - |
dc.subject.keywordPlus | Ionic strength | - |
dc.subject.keywordPlus | Ions | - |
dc.subject.keywordPlus | Irradiation | - |
dc.subject.keywordPlus | Liquids | - |
dc.subject.keywordPlus | Lithium-ion batteries | - |
dc.subject.keywordPlus | Pore structure | - |
dc.subject.keywordPlus | Separators | - |
dc.subject.keywordPlus | Swelling | - |
dc.subject.keywordPlus | Battery performance | - |
dc.subject.keywordPlus | Conventional polyethylenes | - |
dc.subject.keywordPlus | Gamma-ray irradiation | - |
dc.subject.keywordPlus | Gel polymer electrolytes | - |
dc.subject.keywordPlus | Interfacial property | - |
dc.subject.keywordPlus | Ion transportation | - |
dc.subject.keywordPlus | Liquid electrolytes | - |
dc.subject.keywordPlus | Narrow size distributions | - |
dc.subject.keywordPlus | Polyelectrolytes | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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