Boon and Bane of Local Solid State Chemistry on the Performance of LSM‐Based Solid Oxide Electrolysis Cells

Abstract High‐temperature solid oxide cells are highly efficient energy converters. However, their lifetime is limited by rapid deactivation. Little is known about the local, atomic scale transformation that drive this degradation. Here, reaction‐induced changes are unraveled at the atomic scale of a solid oxide electrolysis cell (SOEC) operated for 550 h by combining high‐resolution scanning transmission electron microscopy with first‐principles and force‐field‐based atomistic simulations. We focus on the structural evolution of lanthanum strontium manganite (LSM)/yttria‐stabilized zirconia (YSZ) regions and the corresponding solid–solid interface. It is found that the strong inter‐diffusion of cations leads to the additional formation and growth of a multitude of localized structures such as a solid solution of La/Mn, nano‐domains of secondary structures or antisite defects in the YSZ, as well as a mixed ion and electron conduction region in the LSM and complexion. These local structures can be likewise beneficial or detrimental to the performance, by either increasing the catalytically active area or by limiting the supply of reactants. The work provides unprecedented atomistic insights into the influence of local solid‐state chemistry on the functioning of SOECs and deepens the understanding of the degradation mechanism in SOECs, paving the way towards nanoscopic rational interface design for more efficient and durable cells.

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Publication Details

Journal
Advanced Energy Materials
Published
2024-12-31
DOI
https://doi.org/10.1002/aenm.202405599
Citations
10
Primary Topic
Advancements in Solid Oxide Fuel Cells
Type
article
Field-Weighted Citation Impact
1.17

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article

Boon and Bane of Local Solid State Chemistry on the Performance of LSM‐Based Solid Oxide Electrolysis Cells

Hanna Türk, Christoph Scheurer, Vaibhav Vibhu, L.G.J. de Haart et al.
10 citations
Advanced Energy Materials
Advancements in Solid Oxide Fuel Cells
1.17
article

Boon and Bane of Local Solid State Chemistry on the Performance of LSM‐Based Solid Oxide Electrolysis Cells

Hanna Türk, Christoph Scheurer, Vaibhav Vibhu, L.G.J. de Haart, Yu‐Te Chan, Karsten Reuter, Thomas Lunkenbein, Thomas Götsch, Daniel Abou‐Ras, Franz Schmidt, Frank Girgsdies, Vladimir Roddatis, Dirk Berger, Adnan Hammud, Sören Selve, Hebatallah Ali, Izaak C. Vinke, Rüdiger‐A. Eichel, Axel Knop‐Gericke, Xuan Quy Tran, Michael Lehmann, Peter König
article en
10 citations

Abstract

Abstract High‐temperature solid oxide cells are highly efficient energy converters. However, their lifetime is limited by rapid deactivation. Little is known about the local, atomic scale transformation that drive this degradation. Here, reaction‐induced changes are unraveled at the atomic scale of a solid oxide electrolysis cell (SOEC) operated for 550 h by combining high‐resolution scanning transmission electron microscopy with first‐principles and force‐field‐based atomistic simulations. We focus on the structural evolution of lanthanum strontium manganite (LSM)/yttria‐stabilized zirconia (YSZ) regions and the corresponding solid–solid interface. It is found that the strong inter‐diffusion of cations leads to the additional formation and growth of a multitude of localized structures such as a solid solution of La/Mn, nano‐domains of secondary structures or antisite defects in the YSZ, as well as a mixed ion and electron conduction region in the LSM and complexion. These local structures can be likewise beneficial or detrimental to the performance, by either increasing the catalytically active area or by limiting the supply of reactants. The work provides unprecedented atomistic insights into the influence of local solid‐state chemistry on the functioning of SOECs and deepens the understanding of the degradation mechanism in SOECs, paving the way towards nanoscopic rational interface design for more efficient and durable cells.

Advanced Energy MaterialsVol. 15(16)
Forschungszentrum Jülich (DE), Helmholtz-Zentrum Berlin für Materialien und Energie (DE), Fritz Haber Institute of the Max Planck Society (DE), Max Planck Institute for Chemical Energy Conversion (DE), GFZ Helmholtz Centre for Geosciences (DE), Technische Universität Berlin (DE), École Polytechnique Fédérale de Lausanne (CH), RWTH Aachen University (DE)
Deutsche Forschungsgemeinschaft, Bundesministerium für Bildung und Forschung, Technische Universität Berlin, European Regional Development Fund
Affordable and clean energy
Openalex Percentile: Top 18%
Advancements in Solid Oxide Fuel Cells
1.17
DOIOpen Access PDFOpenAlex
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