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dc.contributor.author선양국-
dc.date.accessioned2017-03-29T04:29:25Z-
dc.date.available2017-03-29T04:29:25Z-
dc.date.issued2015-07-
dc.identifier.citationADVANCED MATERIALS INTERFACES, v. 2, NO 10, Page. 1-10en_US
dc.identifier.issn2196-7350-
dc.identifier.urihttp://onlinelibrary.wiley.com/doi/10.1002/admi.201500109/full-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/26411-
dc.description.abstractAlthough LiNi0.5Mn1.5O4 (LNMO) high-voltage spinel is a promising candidate for a next generation cathode material, LNMO/graphite full cells experience severe capacity fading caused by degradation reactions at electrode/electrolyte interfaces and consequent active Li+ loss in the cells. In this study, it is first reported that in situ formation of a Ti-O enriched cathode/electrolyte interfacial (CEI) layer on a Ti-substituted LiNi0.5Mn1.2Ti0.3O4 (LNMTO) spinel cathode effectively mitigates electrolyte oxidation and transition metal dissolution, which improves the Coulombic efficiency and cycle life of LNMTO/graphite full cells. The Ti-O enriched CEI layer is produced in situ during an initial cycling of LNMTO as a result of selective Mn and Ni dissolution at its surface, as evidenced by various surface characterizations using X-ray photoelectron spectroscopy, transmission electron microscopy, time-of-flight secondary ion mass spectrometry, Raman spectroscopy, and synchrotron-based soft X-ray absorption spectroscopy. The Ti-O enriched CEI has an advantage over traditional LNMO powder coatings, namely the formation of conformal CEI without compromising electronic conduction pathways between cathode particles.en_US
dc.language.isoenen_US
dc.publisherWILEY-BLACKWELLen_US
dc.subjectLI-IONen_US
dc.subjectELECTROCHEMICAL PROPERTIESen_US
dc.subjectLIMN1.5NI0.5-XMXO4 Men_US
dc.subjectNEGATIVE ELECTRODESen_US
dc.subjectLINI0.5MN1.5O4en_US
dc.subjectGRAPHITEen_US
dc.subjectPERFORMANCEen_US
dc.subjectCELLSen_US
dc.subjectDISSOLUTIONen_US
dc.subjectCHEMISTRYen_US
dc.titleIn Situ Formation of a Cathode-Electrolyte Interface with Enhanced Stability by Titanium Substitution for High Voltage Spinel Lithium-Ion Batteriesen_US
dc.typeArticleen_US
dc.relation.no10-
dc.relation.volume2-
dc.identifier.doi10.1002/admi.201500109-
dc.relation.page1-10-
dc.relation.journalADVANCED MATERIALS INTERFACES-
dc.contributor.googleauthorKim, Jung-Hyun-
dc.contributor.googleauthorPieczonka, Nicholas P. W.-
dc.contributor.googleauthorLu, Peng-
dc.contributor.googleauthorLiu, Zhongyi-
dc.contributor.googleauthorQiao, Ruimin-
dc.contributor.googleauthorYang, Wanli-
dc.contributor.googleauthorTessema, Misle M.-
dc.contributor.googleauthorSun, Yang-Kook-
dc.contributor.googleauthorPowell, Bob R.-
dc.relation.code2015041850-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF ENERGY ENGINEERING-
dc.identifier.pidyksun-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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