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Energy storage device including a redox-enhanced electrolyte

United States Patent

August 8, 2017
View the Complete Patent at the US Patent & Trademark Office
An electrical double layer capacitor (EDLC) energy storage device is provided that includes at least two electrodes and a redox-enhanced electrolyte including two redox couples such that there is a different one of the redox couples for each of the electrodes. When charged, the charge is stored in Faradaic reactions with the at least two redox couples in the electrolyte and in a double-layer capacitance of a porous carbon material that comprises at least one of the electrodes, and a self-discharge of the energy storage device is mitigated by at least one of electrostatic attraction, adsorption, physisorption, and chemisorption of a redox couple onto the porous carbon material.
Stucky; Galen (Santa Barbara, CA), Evanko; Brian (Goleta, CA), Parker; Nicholas (Pasadena, CA), Vonlanthen; David (Santa Barbara, CA), Auston; David (Santa Barbara, CA), Boettcher; Shannon (Eugene, OR), Chun; Sang-Eun (Eugene, OR), Ji; Xiulei (Corvallis, OR), Wang; Bao (Corvallis, OR), Wang; Xingfeng (Corvallis, OR), Chandrabose; Raghu Subash (Corvallis, OR)
Oregon State University (Corvallis, OR), The Regents of the University of California (Oakland, CA), University of Oregon (Eugene, OR)
14/ 692,695
April 21, 2015
STATEMENT OF GOVERNMENT SPONSORED SUPPORT This invention was made with Government support under grant (or contract) no. DE-AR0000344 awarded by the Advanced Research Projects Agency-Energy, Department of Energy (DOE) of the United States. The Government may have certain rights in this invention.