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ABO3 (A = La, Ba, Sr, K; B = Co, Mn, Fe) Perovskites for Thermochemical Energy Storage.

ABO3 (A = La, Ba, Sr, K; B = Co, Mn, Fe) Perovskites for Thermochemical Energy Storage.

Authors :
Babiniec, Sean M.
Coker, Eric N.
Ambrosini, Andrea
Miller, James E.
Source :
AIP Conference Proceedings. 2016, Vol. 1734 Issue 1, p1-8. 8p. 1 Black and White Photograph, 3 Charts, 5 Graphs.
Publication Year :
2016

Abstract

The use of perovskite oxides as a medium for thermochemical energy storage (TCES) in concentrating solar power systems is reported. The known reduction/oxidation (redox) active perovskites LaxSr1-xCoyMn1-yO3 (LSCM) and LaxSr1-xCoyMn1-yO3 (LSCF) were chosen as a starting point for such research. Materials of the LSCM and LSCF family were previously synthesized, their structure characterized, and thermodynamics reported for TCES operation. Building on this foundation, the reduction onset temperatures are examined for LSCM and LSCF compositions. The reduction extents and onset temperatures are tied to the crystallographic phase and reaction enthalpies. The effect of doping with Ba and K is discussed, and the potential shortcomings of this subset of materials families for TCES are described. The potential for long-term stability of the most promising material is examined through thermogravimetric cycling, scanning electron microscopy, and dilatometry. The stability over 100 cycles (450-1050℃) of an LSCM composition is demonstrated. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0094243X
Volume :
1734
Issue :
1
Database :
Academic Search Index
Journal :
AIP Conference Proceedings
Publication Type :
Conference
Accession number :
115902759
Full Text :
https://doi.org/10.1063/1.4949104