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Flexible and conductive waste tire-derived carbon/polymer composite paper as pseudocapacitive electrode

United States Patent

April 10, 2018
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A method of making a supercapacitor from waste tires, includes the steps of providing rubber pieces and contacting the rubber pieces with a sulfonation bath to produce sulfonated rubber; pyrolyzing the sulfonated rubber to produce a tire-derived carbon composite comprising carbon black embedded in rubber-derived carbon matrix comprising graphitized interface portions; activating the tire-derived carbon composite by contacting the tire-derived carbon composite with a specific surface area-increasing composition to increase the specific surface area of the carbon composite to provide an activated tire-derived carbon composite; and, mixing the activated tire-derived carbon composite with a monomer and polymerizing the monomer to produce a redox-active polymer coated, activated tire-derived carbon composite. The redox-active polymer coated, activated tire-derived carbon composite can be formed into a film. An electrode and a supercapacitor are also disclosed.
Naskar; Amit K (Knoxville, TN), Paranthaman; Mariappan Parans (Knoxville, TN), Boota; Muhammad (Philadelphia, PA), Gogotsi; Yury (Ivyland, PA)
14/ 852,073
September 11, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with government support under contract No. DE-AC05-00OR22725 awarded by the U.S. Department of Energy. The government has certain rights in this invention.