METHOD OF PRODUCING HIGH PURITY SiOx NANOPARTICLES WITH EXCELLENT VOLATILITY AND APPARATUS FOR PRODUCING THE SAME

a technology of high purity and volatility, applied in the field of high purity siox nanoparticles, can solve the problems of nanoscale silicon particles providing cracking or short circuit of anodes, carbon electrodes have limitations in application to anodes for next generation lithium ion batteries, and can only be used in electrode manufacturing processes, etc., to achieve the effect of high purity, short time and low cos
US20120251710A1Inactive Publication Date: 2012-10-04KOREA INST OF ENERGY RES
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
KOREA INST OF ENERGY RES
Publication Date
2012-10-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present disclosure provides a method of producing high purity SiOx nanoparticles with excellent volatility and an apparatus for producing the same, which enables mass production of SiOx nanoparticles by melting silicon through induction heating and injecting gas to a surface of the molten silicon. The apparatus includes a vacuum chamber, a graphite crucible into which raw silicon is charged, the graphite crucible being mounted inside the vacuum chamber, an induction melting part which forms molten silicon by induction heating of the silicon material received in the graphite crucible, a gas injector which injects a gas into the graphite crucible to be brought into direct contact with a surface of the molten silicon, and a collector disposed above the graphite crucible and collecting SiOx vapor produced by reaction between the molten silicon and the injected gas.
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Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit under 35 U.S.A. §119 of Korean Patent Application No. 10-2011-0030414, filed on Apr. 1, 2011 in the Korean Intellectual Property Office, the entirety of which is incorporated herein by reference.BACKGROUND

[0002] 1. Technical Field

[0003] The present invention relates to a technique for producing high purity SiOx nanoparticles and, more particularly, to a method of producing high purity SiOx nanoparticles with excellent volatility and an apparatus for producing the same, which enables mass production of SiOx nanoparticles by melting a silicon raw material through induction heating and injecting gas to a surface of the molten silicon.

[0004] 2. Description of the Related Art

[0005] Generally, a carbon electrode is used as an anode for lithium ion batteries. Carbon electrodes are advantageous in terms of high charge and discharge efficiency. However, the carbon electrode has limitation in application to an anode f...

Claims

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