Abstract
Nanosized powder was prepared by the solvothermal route and studied as a new candidate for anode material for secondary lithium-ion batteries. The powder was characterized by X-ray diffraction, transmission electron microscopy, and field emission scanning electron microscopy in conjunction with energy dispersive X-ray analyses. It was found that the reversible capacity of the nanosized in the first cycle reached and a capacity of was still maintained for more than 20 cycles. The experimental results of nanosized were compared with that of a micrometer-sized one prepared by the levitation-melting/ballmilling route, which exhibited lower reversible capacity and poor cycling behavior. The superior electrochemical performance of solvothermally prepared is related to the microstructure and nanoscaled particle size. © 2004 The Electrochemical Society. All rights reserved.
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