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dc.contributor.author선양국-
dc.date.accessioned2018-03-08T04:36:28Z-
dc.date.available2018-03-08T04:36:28Z-
dc.date.issued2012-07-
dc.identifier.citationJOURNAL OF THE ELECTROCHEMICAL SOCIETY, 권: 159, 호: 1, 페이지: A1-A5en_US
dc.identifier.issn0013-4651-
dc.identifier.urihttp://jes.ecsdl.org/content/159/1/A1.short-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/43544-
dc.description.abstractTwo novel core-shell cathode materials with average compositions of Li[Ni(0.82)Co(0.04)Mn(0.14)]O(2) and Li[Ni(0.81)Co(0.06)Mn(0.13)]O(2) were synthesized via coprecipitation. Each core-shell material had a common Li[Ni(0.9)Co(0.05)Mn(0.05)]O(2) core which was completely encapsulated by two different concentration-gradient shells with stable surface compositions of Li[Ni(0.67)Co(0.01)Mn(0.32)]O(2) and Li[Ni0.62Co0.14Mn0.24]O(2). Electrochemical and thermal properties of the two materials were investigated and compared to those of the core Li[Ni(0.9)Co(0.05)Mn(0.05)]O(2) material. The Li[Ni(0.82)Co(0.04)Mn(0.14)]O(2) with a high concentration of Mn in the surface layer exhibited improved cycling performance and structural and thermal stability compared to Li[Ni(0.81)Co(0.06)Mn(0.13)]O(2) as well as the core material without the concentration gradient shell. Electrochemical impedance spectroscopy and electron microscopy showed that Mn concentration in surface layer played an important role in stabilizing the surface structure and thus suppressing the increase in the interfacial resistance between the cathode and the electrolyte. (C) 2011 The Electrochemical Society. [DOI: 10.1149/ 2.004201jes]en_US
dc.description.sponsorshipThis research was supported by WCU (World Class University) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (R31-10092).en_US
dc.language.isoenen_US
dc.publisherELECTROCHEMICAL SOC INC, 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USAen_US
dc.subjectLITHIUM-ION BATTERIESen_US
dc.subjectPOSITIVE ELECTRODE MATERIALSen_US
dc.subjectHIGH-ENERGYen_US
dc.subjectPERFORMANCEen_US
dc.subjectCOPRECIPITATIONen_US
dc.subjectSPECTROSCOPYen_US
dc.subjectTEMPERATUREen_US
dc.subjectPARTICLESen_US
dc.subjectCELLSen_US
dc.titleEffect of Mn Content in Surface on the Electrochemical Properties of Core-Shell Structured Cathode Materialsen_US
dc.typeArticleen_US
dc.relation.no1-
dc.relation.volume159-
dc.identifier.doi10.1149/2.004201jes-
dc.relation.page1-5-
dc.relation.journalJOURNAL OF THE ELECTROCHEMICAL SOCIETY-
dc.contributor.googleauthorSun, Yang-Kook-
dc.contributor.googleauthorNoh, Hyung-Joo-
dc.contributor.googleauthorYoon, Chong S.-
dc.relation.code2012205950-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF ENERGY ENGINEERING-
dc.identifier.pidyksun-
dc.identifier.researcherIDB-9157-2013-
dc.identifier.orcidhttp://orcid.org/0000-0002-0117-0170-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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