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Reticulated porous perovskite structures for thermochemical solar energy storage

Pein, Mathias and Matzel, Luca Christian and de Oliveira, Lamark and Alkan, Gözde and Francke, Alexander and Mechnich, Peter and Agrafiotis, Christos and Roeb, Martin and Sattler, Christian (2022) Reticulated porous perovskite structures for thermochemical solar energy storage. Advanced Energy Materials, 12 (10). Wiley. doi: 10.1002/aenm.202102882. ISSN 1614-6832.

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Official URL: https://onlinelibrary.wiley.com/doi/10.1002/aenm.202102882

Abstract

The inherent capability of concentrated solar power (CSP) plants for sensible thermal energy storage ensures their continuous operation and is considered their most crucial competitive edge versus other renewable energy sources. The storage density of air-operated CSP plants can be significantly increased by hybridizing sensible with thermochemical storage of solar heat, exploiting reversible air–solid oxide reduction–oxidation reactions. Thermochemical storage-relevant-protocols testing of in-house manufactured lab-scale reticu-lated porous ceramic foams made entirely of CaMnO3 perovskite reveals fully reversible reduction-oxidation in up to 46 cycles between 300 and 1100 °C under air, without any deterioration of the foams’ structural integrity and exploitable endothermic/exothermic heat effects between 890 and 920 °C linked to an orthorhombic-to-cubic phase transition. Dilatometry experi-ments with CaMnO3 bars under identical cyclic conditions demonstrate the correlation of this phase transition to an increase in the thermal expansion coefficient but nevertheless, complete recovery of the initial specimen dimen-sions upon completion of a full heat-up/cooldown redox cycle. The possibility of shaping into sturdy reticulated porous ceramic structures which exhibit complete dimensional reversibility upon cyclic redox operation, combined with the low cost, earth abundance and environmentally benign character of the constituting elements, render such perovskite compositions extremely attractive for the manufacture of large-scale porous structured objects for exploitation in various thermochemical processes.

Item URL in elib:https://elib.dlr.de/193795/
Document Type:Article
Title:Reticulated porous perovskite structures for thermochemical solar energy storage
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Pein, MathiasUNSPECIFIEDhttps://orcid.org/0000-0002-2796-1229UNSPECIFIED
Matzel, Luca ChristianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Oliveira, LamarkUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alkan, GözdeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Francke, AlexanderUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mechnich, PeterUNSPECIFIEDhttps://orcid.org/0000-0003-4689-8197UNSPECIFIED
Agrafiotis, ChristosUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roeb, MartinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sattler, ChristianUNSPECIFIEDhttps://orcid.org/0000-0002-4314-1124UNSPECIFIED
Date:22 January 2022
Journal or Publication Title:Advanced Energy Materials
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:12
DOI:10.1002/aenm.202102882
Publisher:Wiley
ISSN:1614-6832
Status:Published
Keywords:concentrated solar power, perovskite, solar energy storage
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:Chemical Energy Carriers
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Solar Fuels, E - Smart Operation
Location: Jülich , Köln-Porz
Institutes and Institutions:Institute of Solar Research
Institute of Future Fuels
Institute of Materials Research > Structural and Functional ceramics
Institute of Future Fuels > Solar-Chemical Process Development
Institute of Materials Research > Administrativ-Technische Betriebsleitung / Mikroanalytik und Metallographie
Deposited By: Bülow, Mark
Deposited On:07 Feb 2023 10:00
Last Modified:27 Jun 2023 09:47

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