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dc.contributor.author황장연-
dc.date.accessioned2020-09-29T05:25:00Z-
dc.date.available2020-09-29T05:25:00Z-
dc.date.issued2019-11-
dc.identifier.citationACS APPLIED MATERIALS & INTERFACES, v. 11, no. 46, Page. 43312-43319en_US
dc.identifier.issn1944-8244-
dc.identifier.issn1944-8252-
dc.identifier.urihttps://pubs.acs.org/doi/10.1021/acsami.9b18540-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/154340-
dc.description.abstractHere, we present K0.28MnO2 center dot 0.15H(2)O, which has a two-dimensional open framework, as an intercalation host for potassium ions. K0.28MnO2 center dot 0.15H(2)O has a layered structure consisting of edge-sharing MnO6 octahedra with a large basal spacing of similar to 7.3 angstrom, which facilitates K+-ion mobility. Water molecules in the interlayers between the MnO2 layers play an important role as a pillar to support the structure during repetitive de/potassiation cycles, as confirmed by an operando X-ray diffraction study. As a result, the large K+ ions readily migrate into the crystal structure, resulting in satisfactory electrochemical performance in K-cells. With the aid of the structural pillar, the K0.28MnO2 center dot 0.15H(2)O cathode delivers a high reversible capacity of 150 mA h g(-1) over 100 cycles at a rate of 0.1 C (15 mA g(-1)), with acceptable power capability up to 5 C-rates.en_US
dc.description.sponsorshipThis research was supported by the basic Science Research Program through the National Research Foundation of Korea (NRF), funded by Ministry of Education, Science, and Technology of Korea (MEST), funded by the Korean Government (NRF-2015M3D1A1069713, NRF-2017R1A2A2A05069634, and 2019H1D8A2106002) and was also supported by the research fund of Hanyang University (HY-2019).en_US
dc.language.isoenen_US
dc.publisherAMER CHEMICAL SOCen_US
dc.subjectK-ion batteryen_US
dc.subjectcathodeen_US
dc.subjectlayered-typeen_US
dc.subjecthigh capacityen_US
dc.subjectoperando XRDen_US
dc.titleLayered K0.28MnO2·0.15H2O as a Cathode Material for Potassium-Ion Intercalationen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/acsami.9b18540-
dc.relation.page1-8-
dc.relation.journalACS APPLIED MATERIALS & INTERFACES-
dc.contributor.googleauthorJo, Jae Hyeon-
dc.contributor.googleauthorHwang, Jang-Yeon-
dc.contributor.googleauthorChoi, Jiung-
dc.contributor.googleauthorSun, Yang-Kook-
dc.contributor.googleauthorMyung, Seung-Taek-
dc.relation.code2019002549-
dc.sector.campusS-
dc.sector.daehakCENTER FOR CREATIVE CONVERGENCE EDUCATION[S]-
dc.identifier.pidghkdwkd-
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