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dc.contributor.author황장연-
dc.date.accessioned2019-03-18T00:34:43Z-
dc.date.available2019-03-18T00:34:43Z-
dc.date.issued2016-11-
dc.identifier.citationADVANCED FUNCTIONAL MATERIALS, v. 26, NO. 44, Page. 8083-8093en_US
dc.identifier.issn1616-301X-
dc.identifier.issn1616-3028-
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201603439-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/100904-
dc.description.abstractThe development of high-energy and high-power density sodium-ion batteries is a great challenge for modern electrochemistry. The main hurdle to wide acceptance of sodium-ion batteries lies in identifying and developing suitable new electrode materials. This study presents a composition-graded cathode with average composition Na[Ni(0.61)Co(0.12)Mn(0.2)7]O-2, which exhibits excellent performance and stability. In addition to the concentration gradients of the transition metal ions, the cathode is composed of spoke-like nanorods assembled into a spherical superstructure. Individual nanorod particles also possess strong crystallographic texture with respect to the center of the spherical particle. Such morphology allows the spoke-like nanorods to assemble into a compact structure that minimizes its porosity and maximizes its mechanical strength while facilitating Na+-ion transport into the particle interior. Microcompression tests have explicitly verified the mechanical robustness of the composition-graded cathode and single particle electrochemical measurements have demonstrated the electrochemical stability during Na+-ion insertion and extraction at high rates. These structural and morphological features contribute to the delivery of high discharge capacities of 160 mAh (g oxide)(-1) at 15 mA g(-1) (0.1 C rate) and 130 mAh g(-1) at 1500 mA g(-1) (10 C rate). The work is a pronounced step forward in the development of new Na ion insertion cathodes with a concentration gradient.en_US
dc.description.sponsorshipJ.-Y.H. and S.-T.M. contributed equally to this work. They are co-first authors. This work was mainly supported by the Global Frontier R&D Program (2013M3A6B1078875) of the Center for Hybrid Interface Materials (HIM) funded by the Ministry of Science, Information & Communication Technology (ICT) and the Human Resources Development program (No. 20154010200840) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Trade, Industry and Energy.en_US
dc.language.isoenen_US
dc.publisherWILEY-V C H VERLAG GMBHen_US
dc.subjectRECHARGEABLE SODIUM BATTERIESen_US
dc.subjectSAFE LITHIUM BATTERIESen_US
dc.subjectHIGH-ENERGYen_US
dc.subjectELECTROCHEMICAL PROPERTIESen_US
dc.subjectELECTRODE PERFORMANCEen_US
dc.subjectCHALLENGESen_US
dc.subjectO3-TYPEen_US
dc.subjectP2-TYPEen_US
dc.subjectFUTUREen_US
dc.subjectOXIDESen_US
dc.titleNovel Cathode Materials for Na-Ion Batteries Composed of Spoke-Like Nanorods of Na[Ni0.61Co0.12Mn0.27]O-2 Assembled in Spherical Secondary Particlesen_US
dc.typeArticleen_US
dc.relation.no44-
dc.relation.volume26-
dc.identifier.doi10.1002/adfm.201603439-
dc.relation.page8083-8093-
dc.relation.journalADVANCED FUNCTIONAL MATERIALS-
dc.contributor.googleauthorHwang, Jang-Yeon-
dc.contributor.googleauthorMyung, Seung-Taek-
dc.contributor.googleauthorYoon, Chong Seung-
dc.contributor.googleauthorKim, Sung-Soo-
dc.contributor.googleauthorAurbach, Doron-
dc.contributor.googleauthorSun, Yang-Kook-
dc.relation.code2016001514-
dc.sector.campusS-
dc.sector.daehakCENTER FOR CREATIVE CONVERGENCE EDUCATION[S]-
dc.identifier.pidghkdwkd-
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