High surface area silicon carbide-coated carbon aerogel
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United States of America Patent
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Jan 14, 2014
Grant Date -
Mar 29, 2012
app pub date -
Mar 18, 2011
filing date -
Jan 27, 2010
priority date (Note) -
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Abstract
A metal oxide-carbon composite includes a carbon aerogel with an oxide overcoat. The metal oxide-carbon composite is made by providing a carbon aerogel, immersing the carbon aerogel in a metal oxide sol under a vacuum, raising the carbon aerogel with the metal oxide sol to atmospheric pressure, curing the carbon aerogel with the metal oxide sol at room temperature, and drying the carbon aerogel with the metal oxide sol to produce the metal oxide-carbon composite. The step of providing a carbon aerogel can provide an activated carbon aerogel or provide a carbon aerogel with carbon nanotubes that make the carbon aerogel mechanically robust. Carbon aerogels can be coated with sol-gel silica and the silica can be converted to silicon carbide, improving the thermal stability of the carbon aerogel.
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International Classification(s)
- C09K:MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED ....
- C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
- C23C:COATING METALLIC MATERIAL; COATING MATERIAL WITH M....
- B05D:PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MAT....
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- B01J:CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, CO....
- H05H:PLASMA TECHNIQUE
- B01F:MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
- C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- D02G:CRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR T....
- B01D:SEPARATION
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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