Redox-active oxide materials for thermal energy storage
AssigneeNational Technology & Engineering Solutions of Sandia, LLC
InventorsSean M. Babiniec, Andrea Ambrosini, Eric N. Coker, James E. Miller
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Abstract
Thermochemical storage materials having the general formula AxA′1-xByB′1-yO3-δ, where A=La, Sr, K, Ca, Ba, Y and B=Mn, Fe, Co, Ti, Ni, Cu, Zr, Al, Y, Cr, V, Nb, Mo, are disclosed. These materials have improved thermal storage energy density and reaction kinetics compared to previous materials. Concentrating solar power thermochemical systems and methods capable of storing heat energy by using these thermochemical storage materials are also disclosed.
Claims22
A thermochemical system, comprising:
- a concentrated solar receiver;
- a thermochemical composition provided to the concentrated solar receiver, the thermochemical composition comprising a material having a formula AxA′1-xByB′1-yO3-δ, where A=La, Sr, K, Ca, Ba, Y and B=Mn, Fe, Co, Ti, Ni, Cu, Zr, Al, Y, Cr, V, Nb, Mo, and 0≤x≤1, 0≤y≤1 and 0≤δ≤1.
A thermochemical system, comprising:
- a concentrated solar receiver;
- a thermochemical composition provided to the concentrated solar receiver, the thermochemical composition comprising a perovskite material having a formula LaxSr1-x-zKzCoyMn1-yO3-δ, where M=Mn or Fe and 0≤x≤1, 0≤y≤1, 0≤z≤0.5 and 0≤δ≤1.
A method, comprising:
- providing a thermochemical material to a concentrated solar receiver, the thermochemical material comprising a perovskite material having a formula AxA′1-xByB′1-yO3-δ, where A=La, Sr, K, Ca, Ba, Y and B=Mn, Fe, Co, Ti, Ni, Cu, Zr, Al, Y, Cr, V, Nb, Mo, and 0≤x≤1, 0≤y≤1, and 0≤δ≤1.
A method, comprising:
- providing a thermochemical material to a concentrated solar receiver, the thermochemical material comprising a perovskite material having a formula LaxSr1-x-zKzCoyMn1-yO3-δ, where M=Mn or Fe and 0≤x≤1, 0≤y≤1, 0≤z≤0.5 and 0≤δ≤1.
Dependencies are inferred from the claim text.