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DC Field | Value | Language |
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dc.citation.endPage | 322 | - |
dc.citation.startPage | 317 | - |
dc.citation.title | ELECTROCHIMICA ACTA | - |
dc.citation.volume | 86 | - |
dc.contributor.author | Jeong, Hyun-Seok | - |
dc.contributor.author | Choi, Eun-Sun | - |
dc.contributor.author | Lee, Sang-Young | - |
dc.date.accessioned | 2023-12-22T04:36:42Z | - |
dc.date.available | 2023-12-22T04:36:42Z | - |
dc.date.created | 2014-09-17 | - |
dc.date.issued | 2012-12 | - |
dc.description.abstract | We demonstrate a facile approach for the fabrication of new silica (SiO2) nanoparticles/polyvinylidene fluoride-hexafluoropropylene (PVdF-HFP)-coated polyethylene terephthalate (PET) nonwoven composite separators for use in lithium-ion batteries. By varying the SiO2/PVdF-HFP composition ratio, we can fine-tune the porous structure of the composite separators. At a low SiO2/PVdF-HFP ratio, a nonporous structure featuring the PVdF-HFP matrix and SiO2 domains is obtained. By contrast, an unusual porous structure (i.e., highly-percolated interstitial voids formed between close-packed SiO2 nanoparticles) is developed at a high SiO2/PVdF-HFP ratio, where PVdF-HFP serves as a binder to interconnect SiO2 powders. This drastic change in the morphology of the composite separators is further confirmed by observing their air permeability and ionic conductivity. Meanwhile, a PET nonwoven is employed as a mechanical substrate to suppress thermal shrinkage of the composite separators. On the basis of morphological characterization, the effects of the composition ratio-dependent structural evolution of the composite separators on the electrochemical performance of cells are investigated. Notably, the composite separator fabricated from a composition ratio of SiO2/PVdF-HFP = 90/10 (wt%/wt%) provides superior cell performance owing to a well-tailored microporous structure, as compared to a commercialized polyethylene (PE) separator. | - |
dc.identifier.bibliographicCitation | ELECTROCHIMICA ACTA, v.86, pp.317 - 322 | - |
dc.identifier.doi | 10.1016/j.electacta.2012.03.126 | - |
dc.identifier.issn | 0013-4686 | - |
dc.identifier.scopusid | 2-s2.0-84870690553 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/6173 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84870690553 | - |
dc.identifier.wosid | 000313315600046 | - |
dc.language | 영어 | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Composition ratio-dependent structural evolution of SiO2/poly(vinylidene fluoride-hexafluoropropylene)-coated poly(ethylene terephthalate) nonwoven composite separators for lithium-ion batteries | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Lithium-ion batteries | - |
dc.subject.keywordAuthor | Nonwoven composite separators | - |
dc.subject.keywordAuthor | Silica | - |
dc.subject.keywordAuthor | Polyvinylidene fluoride-hexafluoropropylene | - |
dc.subject.keywordAuthor | Polyethylene terephthalate | - |
dc.subject.keywordPlus | POLYMER ELECTROLYTES | - |
dc.subject.keywordPlus | GEL POLYMER | - |
dc.subject.keywordPlus | MEMBRANE | - |
dc.subject.keywordPlus | ELECTROSPUN | - |
dc.subject.keywordPlus | LICOO2 | - |
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