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US 11,674,231 B2Granted
Materials for ammonia synthesis
AssigneeObio State Innovation Foundation
InventorsUmit Ozkan, Seval Gunduz, Dhruba Jyoti Deka
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Abstract
Disclosed herein are doped perovskite oxides. The doped perovskite oxides may be used as a cathode material in an electrochemical cell to electrochemically generate ammonia from N2. The doped perovskite oxides may be combined with nitride compounds, for instance iron nitride, to further increase the efficiency of the ammonia production.
Claims8
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.
10 more elements
Dependencies are inferred from the claim text.