Kim, Min Kyu Kim, A-Young Woo, Jae Young Lim, Jong Choo Jeon, Bup Ju Lee, Joong Kee 2024-01-20T03:31:11Z 2024-01-20T03:31:11Z 2021-09-05 2016-09-25 0925-8388 https://pubs.kist.re.kr/handle/201004/123661 Surface modification of SnO2:F particles which obtained from a large-scale electron cyclotron resonance metal organic chemical vapor deposition system was carried out by two consecutive processes: electroless plating processing and annealing. First, Ni film on the SnO2:F and Ni nanoclusters were observed after Ni electrodes plating; the film on the SnO2:F was then converted to Ni3Sn2 after annealing at 800 degrees C under an argon atmosphere. A Ni3Sn2 bimetallic structure formed instead of Ni0 during the annealing process because of the presence of carbon impurities in SnO2:F. The surface-modified Ni3Sn2-covered SnO2:F with Ni nanoclusters (SnO2:F@Ni3Sn2/Ni-nc) was employed as an anode material for lithium-ion batteries. The inactive Ni in Ni3Sn2 acts as a buffer matrix against the Sn active material during the charge-discharge reactions, enhancing the electrochemical performance. The Ni nanoclusters in SnO2:F@Ni3Sn2/Ni-nc perform dual functions: they not only improve the conductivity as the contacting media, but also increase the initial columbic efficiency by the decomposition of Li2O-an electrochemically irreversible material. An outstanding reversible capacity of 600.69 mA h g(-1) and a coulombic efficiency of 99.23% for SnO2:F@Ni3Sn2/Ni-nc were observed at the 350th cycle under 200 mA g(-1) in the our experimental range. (C) 2016 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA TIN OXIDE-FILM ELECTROCHEMICAL PERFORMANCE SECONDARY BATTERIES MESOPOROUS SNO2 THIN-FILMS LONG-CYCLE NI STORAGE ELECTRODES NANOPARTICLES Employment of SnO2:F@Ni3Sn2/Ni nanoclusters composites as an anode material for lithium-ion batteries Article 10.1016/j.jallcom.2016.04.174 1 JOURNAL OF ALLOYS AND COMPOUNDS, v.680, pp.744 - 751 JOURNAL OF ALLOYS AND COMPOUNDS 680 744 751 scie scopus 000376109000100 2-s2.0-84966441065 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article TIN OXIDE-FILM ELECTROCHEMICAL PERFORMANCE SECONDARY BATTERIES MESOPOROUS SNO2 THIN-FILMS LONG-CYCLE NI STORAGE ELECTRODES NANOPARTICLES Intermetallics Transition metal alloys and compounds Energy storage materials Solid state reactions Electrochemical reactions