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Non-noble metal based electro-catalyst compositions for proton exchange membrane based water electrolysis and methods of making

United States Patent

February 7, 2017
View the Complete Patent at the US Patent & Trademark Office
The invention provides electro-catalyst compositions for an anode electrode of a proton exchange membrane-based water electrolysis system. The compositions include a noble metal component selected from the group consisting of iridium oxide, ruthenium oxide, rhenium oxide and mixtures thereof, and a non-noble metal component selected from the group consisting of tantalum oxide, tin oxide, niobium oxide, titanium oxide, tungsten oxide, molybdenum oxide, yttrium oxide, scandium oxide, cooper oxide, zirconium oxide, nickel oxide and mixtures thereof. Further, the non-noble metal component can include a dopant. The dopant can be at least one element selected from Groups III, V, VI and VII of the Periodic Table. The compositions can be prepared using a surfactant approach or a sol gel approach. Further, the compositions are prepared using noble metal and non-noble metal precursors. Furthermore, a thin film containing the compositions can be deposited onto a substrate to form the anode electrode.
Kumta; Prashant N. (Pittsburgh, PA), Kadakia; Karan Sandeep (Pittsburgh, PA), Datta; Moni Kanchan (Pittsburgh, PA), Velikokhatnyi; Oleg (Pittsburgh, PA)
University of Pittsburgh--Of the Commonwealth System of Higher Education (Pittsburgh, PA)
13/ 961,327
August 7, 2013
GOVERNMENT SUPPORT This application was made with government support under grant #DE-SC0001531 awarded by the Department of Energy (DOE). The government has certain rights in the invention.