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STABLE BROMINE CHARGE STORAGE IN POROUS CARBON ELECTRODES USING TETRAALKYLAMMONIUM BROMIDES FOR REVERSIBLE SOLIDCOMPLEXATION

United States Patent Application

20170256366
A1
View the Complete Application at the US Patent & Trademark Office
Electrolytes for use in electric double-layer capacitors (EDLCs; often referred as supercapacitors or ultracapacitors) are disclosed. In one example, the electrolyte comprises viologen in both the anolyte and the catholyte (with bromide). In another example, the electrolyte comprises viologen (in the anolyte) and tetraalkylammonium with bromide (in the catholyte), wherein the tetraalkylammonium is used to achieve solid complexation of bromine in the activated carbon of the cathode. In a third example, a zinc bromine/tetraalkylammonium supercapacitor/battery hybrid is disclosed. Also disclosed is a corrosion resistant bipolar pouch cell that can be used with the electrolyte embodiments described herein.
Stucky, Galen D. (Santa Barbara, CA), Evanko, Brian (Goleta, CA), Yoo, Seung Joon (Goleta, CA), Lipton, Jason (San Rafael, CA), Boettcher, Shannon W. (Eugene, OR), Ji, David Xiulei (Happy Valley, OR), Wang, Xingfeng (Corvallis, OR)
15/ 601,811
May 22, 2017
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT [0003] This invention was made with Government support under Grant No. DE-AR0000344, awarded by the U.S. Department of Energy (DOE). The Government has certain rights in this invention.