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Initiated Chemical Vapor Deposition (iCVD) of Highly Cross-Linked Polymer Films for Advanced Lithium-Ion Battery Separators

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dc.contributor.authorYoo, Youngmin-
dc.contributor.authorKim, Byung Gon-
dc.contributor.authorPak, Kwanyong-
dc.contributor.authorHan, Sung Jae-
dc.contributor.authorSong, Heon-Sik-
dc.contributor.authorChoi, Jang Wook-
dc.contributor.authorIm, Sung Gap-
dc.date.accessioned2020-03-16T11:09:08Z-
dc.date.available2020-03-16T11:09:08Z-
dc.date.issued2015-08-
dc.identifier.citationACS Applied Materials and Interfaces, Vol.7 No.33, pp.18849-18855-
dc.identifier.issn1944-8244-
dc.identifier.other38646-
dc.identifier.urihttps://hdl.handle.net/10371/164663-
dc.description.abstractWe report an initiated chemical vapor deposition (iCVD) process to coat polyethylene (PE) separators in Li-ion batteries with a highly cross-linked, mechanically strong polymer, namely, polyhexavinyldisiloxane (pHVDS). The highly cross-linked but ultrathin pHVDS films can only be obtained by a vapor-phase process, because the pHVDS is insoluble in most solvents and thus infeasible with conventional solution-based methods. Moreover, even after the pHVDS coating, the initial porous structure of the separator is well preserved owing to the conformal vapor-phase deposition. The coating thickness is delicately controlled by deposition time to the level that the pore size decreases to below 7% compared to the original dimension. The pHVDS-coated PE shows substantially improved thermal stability and electrolyte wettability. After incubation at 140 degrees C for 30 min, the pHVDS-coated PE causes only a 12% areal shrinkage (versus 90% of the pristine separator). The superior wettability results in increased electrolyte uptake and ionic conductivity, leading to significantly improved rate performance. The current approach is applicable to a wide range of porous polymeric separators that suffer from thermal shrinkage and poor electrolyte wetting.-
dc.subjectelectrolyte wettability-
dc.subjectinitiated chemical vapor deposition (iCVD)-
dc.subjectLi-ion battery separator-
dc.subjectpoly hexavinyldisiloxane (pHVDS)-
dc.subjectthermal stability-
dc.titleInitiated Chemical Vapor Deposition (iCVD) of Highly Cross-Linked Polymer Films for Advanced Lithium-Ion Battery Separators-
dc.typeArticle-
dc.contributor.AlternativeAuthor최장욱-
dc.identifier.doi10.1021/acsami.5b05720-
dc.citation.journaltitleACS Applied Materials and Interfaces-
dc.identifier.scopusid2-s2.0-84940416469-
dc.citation.endpage18855-
dc.citation.number33-
dc.citation.startpage18849-
dc.citation.volume7-
dc.identifier.urlhttps://pubs.acs.org/doi/10.1021/acsami.5b05720-
dc.identifier.rimsid38646-
dc.identifier.sci000360322000077-
dc.description.isOpenAccessN-
dc.contributor.affiliatedAuthorChoi, Jang Wook-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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