Hydrothermally processed oxide nanostructures and their lithium-ion storage properties

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Abstract

Y- and Si-based oxide nanopowders were synthesized by a hydrothermal reaction of Y or Si powders with NaOH or LiOH aqueous solution. Nanoparticles with different morphology such as elongated nanospheres, flower-like nanoparticles and nanowires were produced by a control of processing parameters, in particular, the starting composition of solution. The preliminary result of electrochemical examination showed that the hydrothermally processed nanowires exhibit high initial capacities of Li-ion storage: 653 mAh/g for Y 2O 3 nanowires as anode materials and 186 mAh/g for Li 2Si 2O 5 nanowires as cathode materials in a Li secondary cell. Compared to the powder with elongated sphere or flower-like shapes, the nanowires showed a higher Li-ion capacity and a better cycle property. © 2010 The Author(s).

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Ahn, J. H., Kim, Y. J., & Wang, G. (2010). Hydrothermally processed oxide nanostructures and their lithium-ion storage properties. Nanoscale Research Letters, 5(11), 1841–1845. https://doi.org/10.1007/s11671-010-9722-y

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