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High energy density redox flow device

United States Patent

9,614,231
April 4, 2017
View the Complete Patent at the US Patent & Trademark Office
Redox flow devices are described including a positive electrode current collector, a negative electrode current collector, and an ion-permeable membrane separating said positive and negative current collectors, positioned and arranged to define a positive electroactive zone and a negative electroactive zone; wherein at least one of said positive and negative electroactive zone comprises a flowable semi-solid composition comprising ion storage compound particles capable of taking up or releasing said ions during operation of the cell, and wherein the ion storage compound particles have a polydisperse size distribution in which the finest particles present in at least 5 vol % of the total volume, is at least a factor of 5 smaller than the largest particles present in at least 5 vol % of the total volume.
Carter; W. Craig (Jamaica Plain, MA), Chiang; Yet-Ming (Weston, MA), Duduta; Mihai (Cambridge, MA), Limthongkul; Pimpa (Cambridge, MA)
24M Technologies, Inc. (Cambridge, MA)
14/ 002,304
20140154546
December 16, 2011
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.