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dc.contributor.author선양국-
dc.date.accessioned2018-05-24T06:58:02Z-
dc.date.available2018-05-24T06:58:02Z-
dc.date.issued2016-05-
dc.identifier.citationJOURNAL OF THE ELECTROCHEMICAL SOCIETY, v. 163, NO 7, Page. 1348-1358en_US
dc.identifier.issn0013-4651-
dc.identifier.issn1945-7111-
dc.identifier.urihttp://jes.ecsdl.org/content/163/7/A1348-
dc.identifier.urihttp://repository.hanyang.ac.kr/handle/20.500.11754/71501-
dc.description.abstractIn this work, nickel-rich, layered-structure LiNi0.65Co0.08Mn0.27O2 cathode materials were synthesized and compared with materials of the same overall composition, but with a concentration gradient throughout the particles: the Ni concentration is higher at the center of the particles and lower at surface, while the opposite is true for the Mn concentration. The co-precipitation synthesis parameters were optimized, with two different annealing protocols for the final products and the effect of chelating agent concentration during synthesis examined. The gradientmaterials provided superior capacity and rate capability than their respective non-gradient-materials, at normal operating potentials and temperatures, e.g. 30 degrees C up to 4.3 V vs. Li. The reasons for the improved discharge capacity of the gradient materials were explored through impedance spectroscopy and post-mortem characterization. The gradient structure evolution was examined via TEM and electron diffraction measurements of particle cross-sections. Prolonged cycling, even at elevated temperatures, did not change the initial concentration profiles determined by the synthesis. Additionally, long-term cycling experiments of the second-generation material electrodes vs. graphite electrodes in full cells were performed in order to explore the practical advantage of these novel materials. (C) 2016 The Electrochemical Society. All rights reserved.en_US
dc.description.sponsorshipEME thanks Albert Mor and Ivan Surzhyk for their help throughout the project. This work was mainly supported by the Global Frontier R&D Program (2013M3A6B1078875) on Center for Hybrid Interface Materials (HIM) funded by the Ministry of Science, Information & Communication Technology (ICT) and Future Planning and also supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government Ministry of Education and Science Technology (MEST) (No. 2014R1A2A1A13050479).en_US
dc.language.isoenen_US
dc.publisherELECTROCHEMICAL SOC INCen_US
dc.subjectLITHIUM-ION BATTERIESen_US
dc.subjectHIGH-ENERGYen_US
dc.subjectCORE-SHELLen_US
dc.subjectCOMPOSITE CATHODEen_US
dc.subjectLONG-LIFEen_US
dc.subjectSURFACEen_US
dc.subjectOXIDEen_US
dc.subjectNANORODen_US
dc.subjectLICOO2en_US
dc.subjectCELLSen_US
dc.titleSynthesis and Electrochemical Performance of Nickel-Rich Layered-Structure LiNi0.65Co0.08Mn0.27O2 Cathode Materials Comprising Particles with Ni and Mn Full Concentration Gradientsen_US
dc.typeArticleen_US
dc.relation.no7-
dc.relation.volume163-
dc.identifier.doi10.1149/2.0951607jes-
dc.relation.page1348-1358-
dc.relation.journalJOURNAL OF THE ELECTROCHEMICAL SOCIETY-
dc.contributor.googleauthorErickson, Evan M.-
dc.contributor.googleauthorBouzaglo, Hana-
dc.contributor.googleauthorSclar, Hadar-
dc.contributor.googleauthorPark, Kang-Joon-
dc.contributor.googleauthorLim, Byung-Beom-
dc.contributor.googleauthorSchipper, Florian-
dc.contributor.googleauthorGhanty, Chandan-
dc.contributor.googleauthorGrinblat, Judith-
dc.contributor.googleauthorMarkovsky, Boris-
dc.contributor.googleauthorSun, Yang-Kook-
dc.relation.code2016002465-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF ENERGY ENGINEERING-
dc.identifier.pidyksun-
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COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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