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Synthesis of Nano-Sized SiOx/C Composite by a Drip Combustion in Fluidized Bed Reactor and Its Electrochemical Properties

Published online by Cambridge University Press:  26 November 2015

Anara Molkenova ,
Seitaro Kato  and
Izumi Taniguchi
Anara Molkenova
Affiliation:
Department of Chemical Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
Seitaro Kato
Affiliation:
Department of Chemical Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
Izumi Taniguchi
Affiliation:
Department of Chemical Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
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Abstract

Nano-sized SiOx/C composite was successfully prepared by drip combustion in a fluidized bed reactor. A mixture of tetraethyl orthosilicate (TEOS) ant kerosene at a 2:3 volume ratio was used as a precursor solution. The synthesis was carried out between 600 °C and 900 °C. The as-prepared powder (600 °C) consists of SiOx and carbon particles which are approximately ranged from 30 to 80 nm. For the nano-sized SiOx/C composite sample, the heat treatment process was introduced to remove incomplete combustion materials and the dry ball milling was performed to homogenize the distribution of carbon inside the sample. The final sample (nano-sized SiOx/C nanocomposite) was used as an electrode active material and then electrochemical testing was performed. The cell exhibited discharge and charge capacities of 1158 and 533 mAh g-1, respectively, at current density of 50 mAh g-1 in the voltage range between 0.01-3 V versus Li/Li+.

Keywords

combustion synthesisenergy storagepowder processing
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1775: Symposium I – High Capacity Anode Materials for Lithium Ion Batteries , 2015 , pp. 13 - 18
Copyright
Copyright © Materials Research Society 2015 

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References

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