US 11,959,011 B2
High-temperature thermochemical energy storage materials using doped magnesium-transition metal spinel oxides
Christopher Muhich, Phoenix, AZ (US); Jayni Hashimoto, Tempe, AZ (US); Daniel Rivera, Mesa, AZ (US); and Harsheen Rajput, Miami, AZ (US)
Assigned to Arizona Board of Regents on Behalf of Arizona State University, Scottsdale, AZ (US)
Filed by Christopher Muhich, Phoenix, AZ (US); Jayni Hashimoto, Tempe, AZ (US); Daniel Rivera, Mesa, AZ (US); and Harsheen Rajput, Miami, AZ (US)
Filed on Aug. 9, 2021, as Appl. No. 17/397,495.
Claims priority of provisional application 63/062,649, filed on Aug. 7, 2020.
Prior Publication US 2022/0041913 A1, Feb. 10, 2022
Int. Cl. C09K 5/16 (2006.01); C01G 45/12 (2006.01)
CPC C09K 5/16 (2013.01) [C01G 45/12 (2013.01); C01G 45/1235 (2013.01); C01P 2002/32 (2013.01); C01P 2002/54 (2013.01); C01P 2002/72 (2013.01); C01P 2006/32 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A thermochemical energy storage material, comprising:
a magnesium-transition metal spinel oxide that comprises magnesium manganese oxide; and
a dopant metal doping the magnesium-transition metal spinel oxide to enhance thermochemical energy storage, the dopant metal comprising at least one of iron (Fe) or nickel (Ni), and the dopant metal being a substituting material for manganese (Mn) in the magnesium-transition metal spinel oxide;
wherein the thermochemical energy storage material has the formula (MgMn1-xYx)3O4, where Yx represents the dopant metal, and a ratio of magnesium (Mg) to manganese (Mn) is 1:1 within a 15% tolerance.