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High efficiency iron electrode and additives for use in rechargeable iron-based batteries

United States Patent

February 21, 2017
View the Complete Patent at the US Patent & Trademark Office
An iron electrode and a method of manufacturing an iron electrode for use in an iron-based rechargeable battery are disclosed. In one embodiment, the iron electrode includes carbonyl iron powder and one of a metal sulfide additive or metal oxide additive selected from the group of metals consisting of bismuth, lead, mercury, indium, gallium, and tin for suppressing hydrogen evolution at the iron electrode during charging of the iron-based rechargeable battery. An iron-air rechargeable battery including an iron electrode comprising carbonyl iron is also disclosed, as is an iron-air battery wherein at least one of the iron electrode and the electrolyte includes an organosulfur additive.
Narayan; Sri R. (Arcadia, CA), Prakash; G. K. Surya (Hacienda Heights, CA), Aniszfeld; Robert (Los Angeles, CA), Manohar; Aswin (Los Angeles, CA), Malkhandi; Souradip (Los Angeles, CA), Yang; Bo (Los Angeles, CA)
University of Southern California (Los Angeles, CA)
13/ 524,761
June 15, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The invention was made with Government support under ARPA-E funded Project DE-AR0000136 from the U.S. Department of Energy. The Government has certain rights to the invention.