US 11,674,231 B2
Materials for ammonia synthesis
Umit Ozkan, Columbus, OH (US); Seval Gunduz, Columbus, OH (US); and Dhruba Jyoti Deka, Columbus, OH (US)
Assigned to Obio State Innovation Foundation, Columbus, OH (US)
Filed by Ohio State Innovation Foundation, Columbus, OH (US)
Filed on Jan. 14, 2020, as Appl. No. 16/742,390.
Claims priority of provisional application 62/791,968, filed on Jan. 14, 2019.
Prior Publication US 2020/0224323 A1, Jul. 16, 2020
Int. Cl. C25B 11/069 (2021.01); C25B 11/051 (2021.01); C25B 9/23 (2021.01); C25B 1/00 (2021.01); C25B 13/04 (2021.01); C01G 51/00 (2006.01); C01G 53/00 (2006.01); C04B 35/58 (2006.01); C04B 35/26 (2006.01); C25B 9/19 (2021.01); C25B 11/077 (2021.01); C25B 1/27 (2021.01); C25B 11/047 (2021.01); C01G 49/00 (2006.01); C25B 13/07 (2021.01)
CPC C25B 11/069 (2021.01) [C01G 49/009 (2013.01); C01G 51/70 (2013.01); C01G 53/70 (2013.01); C04B 35/2633 (2013.01); C04B 35/2641 (2013.01); C04B 35/58042 (2013.01); C25B 1/00 (2013.01); C25B 1/27 (2021.01); C25B 9/19 (2021.01); C25B 9/23 (2021.01); C25B 11/047 (2021.01); C25B 11/051 (2021.01); C25B 11/0773 (2021.01); C25B 13/04 (2013.01); C25B 13/07 (2021.01); C01P 2002/34 (2013.01); C01P 2002/50 (2013.01); C01P 2006/40 (2013.01); C04B 2235/3274 (2013.01); C04B 2235/3852 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A cathode comprising a perovskite oxide having the formula:
A1wA2xXyFezO3
wherein:
A1 is selected from La, Tb, Gd, Sm, Pr, and Nd;
A2 is selected from Sr, Mg, Ca, and Ba;
X is one or more metals in the +1 or +2 oxidation state;
w is from 0.5-1.0;
x is from 0-0.5;
y is from 0-0.5; and
z is from 0.5 to less than 1.0;
wherein w, x, y, and z are chosen to maintain electroneutrality; and
one or more nitride compounds having the formula MaNb, wherein M is selected from Fe, Mb, Co, Cr, and V, a is selected from 1, 2, 3, or and 4, and b is selected from 1, 2, 3, and 4.