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AbstractAbstract
[en] Layered Li(Ni1/3Co1/3Mn1/3)O2 was prepared by mixed hydroxide method and characterised by means of X-ray diffraction, X-ray photoelectron spectroscopy (XPS), cyclic voltammetry and charge-discharge cycling. The hexagonal lattice parameters obtained for the compound are: a=2.864 and c=14.233 Angst. XPS studies show that the predominant oxidation states of Ni, Co and Mn in the compound are 2+, 3+ and 4+, respectively with small content of Ni3+ and Mn3+ ions. Initial discharge capacity of 160 mAh/g was obtained in the range 2.5-4.4 V and at a specific current of 30 mA/g of which 143 mAh/g was retained at the end of 40 charge-discharge cycles. At lower current (10 mA/g) and in the voltage window 2.5-4.7 V, discharge capacity of 215 mAh/g is obtainable. From the voltage profile and cyclic voltammetry, the redox processes occurring at ∼3.8 and ∼4.6 V are assigned to the Ni2+/4+ and Co3+/4+ couples, respectively
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S0013468602005935; Copyright (c) 2002 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
Journal
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ALKALI METAL COMPOUNDS, CHALCOGENIDES, CHARGED PARTICLES, COBALT COMPOUNDS, COHERENT SCATTERING, CRYSTAL LATTICES, CRYSTAL STRUCTURE, DIFFRACTION, ELECTROCHEMICAL CELLS, ELECTRON SPECTROSCOPY, ENERGY STORAGE SYSTEMS, ENERGY SYSTEMS, IONS, LITHIUM COMPOUNDS, MANGANESE COMPOUNDS, NICKEL COMPOUNDS, OXIDES, OXYGEN COMPOUNDS, PHOTOELECTRON SPECTROSCOPY, REPROCESSING, SCATTERING, SEPARATION PROCESSES, SPECTROSCOPY, TRANSITION ELEMENT COMPOUNDS
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