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US 9,296,613 B2Granted
Dispersion of carbon material and process for producing same
AssigneesNational University Corporation Tohoku University, Stella Chemifa Corporation
InventorsKazuyuki Tohji, Yoshinori Sato, Shinji Hashiguchi, Kazutaka Hirano
Life of this patent
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Abstract
The invention is directed to a carbon material dispersion, including: a fluorinated carbon material having a fluorinated surface formed by bringing a treatment gas with a fluorine concentration of 0.01 to 100 vol % into contact with a carbon material under conditions at 150 to 600° C.; and a dispersion medium in which the fluorinated carbon material is dispersed.
Claims10
A carbon material dispersion, comprising:
- a fluorinated carbon material having a fluorinated surface formed by bringing a treatment gas with a fluorine concentration of 0.01 to 20 vol % into contact with a carbon material under conditions of a treatment time of 4 to 24 hours and a treatment temperature of 150 to 350° C.;
- and
- a dispersion medium in which the fluorinated carbon material is dispersed,
- wherein a surface of the fluorinated carbon material is free from fluorine gas and the fluorinated carbon material is added in an amount of 0.001 to 25 vol % based on the total weight of the dispersion to the dispersion medium.
1 more element
A method for producing a carbon material dispersion, comprising the steps of:
- bringing a treatment gas with a fluorine concentration of 0.01 to 20 vol % into contact with a carbon material under conditions of a treatment time of 4 to 24 hours and a treatment temperature of 150 to 350° C. to produce a fluorinated carbon material having a fluorinated surface;
- performing a vacuum evacuation of the treatment gas;
- reducing or removing fluorine gas adsorbed and remaining on the surface of the fluorinated carbon material by introducing an inert gas to reach the atmospheric pressure;
- and
- dispersing the fluorinated carbon material in a dispersion medium
- wherein the fluorinated carbon material is added in an amount of 0.001 to 25 vol % based on the total weight of the dispersion to the dispersion medium.
3 more elements
Dependencies are inferred from the claim text.