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dc.contributor.author정훈기-
dc.contributor.author박성진-
dc.contributor.author황장연-
dc.contributor.author윤종승-
dc.contributor.author선양국-
dc.date.accessioned2021-06-09T04:20:24Z-
dc.date.available2021-06-09T04:20:24Z-
dc.date.issued2018-05-
dc.identifier.citationVOL 10, NO 21-17993-
dc.identifier.issn1944-8244-
dc.identifier.other51094-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/67866-
dc.description.abstractLithium (Li) metals have been considered most promising candidates as an anode to increase the energy density of Li-ion batteries because of their ultrahigh specific capacity (3860 mA h g(-1)) and lowest redox potential (-3.040 V vs standard hydrogen electrode). However, unstable dendritic electrodeposition, low Coulombic efficiency, and infinite volume changes severely hinder their practical uses. Herein, we report that ethyl methyl carbonate (EMC)- and fluoroethylene carbonate (FEC)-based electrolytes significantly enhance the energy density and cycling stability of Li-metal batteries (LMBs). In LMBs, using commercialized Ni-rich Li[Ni0.6Co0.2Mn0.2]O-2 (NCM622) and 1 M LiPF6 in EMC/FEC = 3:1 electrolyte exhibits a high initial capacity of 1.8 mA h cm(-2) with superior cycling stability and high Coulombic efficiency above 99.8% for 500 cycles while delivering a unprecedented energy density. The present work also highlights a significant improvement in scaled-up pouch-type Li/NCM622 cells. Moreover, the postmortem characterization of the cycled cathodes, separators, and Li-metal anodes collected from the pouch-type Li/NCM622 cells helped identifying the improvement or degradation mechanisms behind the observed electrochemical cycling.-
dc.publisherACS Applied Materials & Interfaces-
dc.subjectLi-metal battery-
dc.subjecthigh-energy density-
dc.subjectNCM 622-
dc.subjectfluoroethylene carbonate-
dc.subjectLiF-rich SEI layer-
dc.titleStabilization of Lithium-Metal Batteries Based on the in Situ Formation of a Stable Solid Electrolyte Interphase Layer-
dc.typeArticle-
dc.relation.page1798517993-
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