US 11,996,566 B2
Highly active, robust and versatile multifunctional, fully non-noble metals based electro-catalyst compositions and methods of making for energy conversion and storage
Prashant N. Kumta, Pittsburgh, PA (US); Prasad P. Patel, Pittsburgh, PA (US); Moni K. Datta, Pittsburgh, PA (US); Oleg Velikokhatnyi, Pittsburgh, PA (US); Prashanth J. Hanumantha, Pittsburgh, PA (US); Ramalinga Kuruba, Pittsburgh, PA (US); and Shrinath Ghadge, Pittsburgh, PA (US)
Assigned to UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, Pittsburgh, PA (US)
Filed by UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, Pittsburgh, PA (US)
Filed on Feb. 25, 2021, as Appl. No. 17/185,601.
Application 17/185,601 is a continuation of application No. 15/776,092, granted, now 10,944,114, previously published as PCT/US2016/066098, filed on Dec. 12, 2016.
Claims priority of provisional application 62/265,503, filed on Dec. 10, 2015.
Prior Publication US 2021/0184226 A1, Jun. 17, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/90 (2006.01); B01J 27/135 (2006.01); B82Y 30/00 (2011.01); H01M 4/88 (2006.01); H01M 8/08 (2016.01); H01M 8/1018 (2016.01); H01M 8/1233 (2016.01)
CPC H01M 4/9016 (2013.01) [H01M 4/881 (2013.01); H01M 4/8825 (2013.01); H01M 8/08 (2013.01); H01M 8/1018 (2013.01); H01M 8/1233 (2013.01); B01J 27/135 (2013.01); B82Y 30/00 (2013.01); Y02E 60/50 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A nanostructured, noble metal-free electro-catalyst composition in an acidic electrolyte in a proton exchange membrane-based system, comprising:
a non-noble metal oxide of a general formula 1:
(axby)Oz  (I)
wherein, the a is titanium, vanadium, iron, chromium, tantalum, tin, niobium, tungsten, molybdenum, yttrium, scandium, copper, zinc, cobalt, nickel, lanthanum, cerium, neodymium, erbium, gadolinium, ytterbium and mixtures thereof, b is Mn, O is oxygen, x and y are each a number greater than 0 and less than or equal to 2, x and y being the same or different, and z is a number that is greater than 0 and less than or equal to 4, in a form selected from the group consisting of nano-particle, nanocrystalline thin film, nanorod, nanoshell, nanoflake, nanotube, nanoplate, nanosphere, nanowhisker and combinations thereof,
wherein the noble metal-free electro-catalyst composition is absent of noble metal,
wherein the proton exchange membrane-based system is an oxygen evolution reaction in an acidic electrolyte proton exchange membrane-based water electrolyzer, or an oxygen reduction reaction in an acidic electrolyte proton exchange membrane-based fuel cell.