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High energy density redox flow device

United States Patent

May 13, 2014
View the Complete Patent at the US Patent & Trademark Office
Redox flow devices are described in which at least one of the positive electrode or negative electrode-active materials is a semi-solid or is a condensed ion-storing electroactive material, and in which at least one of the electrode-active materials is transported to and from an assembly at which the electrochemical reaction occurs, producing electrical energy. The electronic conductivity of the semi-solid is increased by the addition of conductive particles to suspensions and/or via the surface modification of the solid in semi-solids (e.g., by coating the solid with a more electron conductive coating material to increase the power of the device). High energy density and high power redox flow devices are disclosed. The redox flow devices described herein can also include one or more inventive design features. In addition, inventive chemistries for use in redox flow devices are also described.
Chiang; Yet-Ming (Weston, MA), Carter; W. Craig (Jamaica Plain, MA), Ho; Bryan Y. (Cambridge, MA), Duduta; Mihai (Somerville, MA), Limthongkul; Pimpa (Boston, MA)
Massachusetts Institute of Technology (Cambridge, MA), 24-M Technologies, Inc. (Cambridge, MA)
13/ 975,474
August 26, 2013
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under Grant Number DE-FC26-05NT42403 awarded by the Department of Energy. The government has certain rights in this invention.