HOLLOW GRAPHENE NANOPARTICLE AND METHOD FOR MANUFACTURING THE SAME
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United States of America Patent
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Issued Date -
Apr 30, 2015
app pub date -
Jan 30, 2014
filing date -
Oct 28, 2013
priority date (Note) -
Abandoned
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Abstract
Disclosed are a hollow graphene nanoparticle and a method for manufacturing the same. The hollow graphene nanoparticle is made of graphene sheets stacked together, and has a particle size of 10˜500 nm and a specific surface area greater than 500 m2/g. The method includes the steps of forming graphene, etching and heat treatment. First, a reducing agent is injected into an oven filled with protective gas, a carbon-containing gas compound or a second gas compound decomposing to generate carbon at higher temperature is added, a processing temperature is heated up to perform a redox reaction so as to form graphene nanoparticles containing side products, the graphene nanoparticles is then immersed in the acidic etching solution to remove the side products and obtain the hollow graphene nanoparticles.
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