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Performance and Degradation Mechanisms of Electrode Materials for Solid Oxide...
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Performance and Degradation Mechanisms of Electrode Materials for Solid Oxide Cells Devices

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Corrosion".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 13327

Special Issue Editors

Dr. Marc Torrell

E-Mail Website
Guest Editor
Dept. Advanced Materials for Energy, Jardins de les Dones de Negre 1, 2ª pl., 08930 Sant Adrià de Besòs, Barcelona, Spain
Interests: ceramic energy devices; SOFC; SOEC; hydrogen technologies; 3D printing of functional ceramics; fuel cells; energy transition
Dr. Miguel Ángel Laguna Bercero

E-Mail Website
Guest Editor
Instituto de Ciencia de Materiales de Aragón, Zaragoza, Spain
Interests: materials for electrochemistry; solid oxide fuel cells; high temperature electrolysers

Special Issue Information

Dear Colleagues,

The study of electrode materials for Solid Oxide Cell (SOC) devices is constantly bringing new progress to the field. Detailed studies of the mechanisms of the historical state-of-the-art materials have brought new architectures, morphologies, and advanced nanocomposites, while new materials compositions have also been tested. The aim of the Special Issue “Performance and Degradation Mechanisms of Electrode Materials for Solid Oxide Cell Devices” is to compile new results in the knowledge of the catalytic and degradation mechanisms of a wide range of electrode materials. Oxygen electrodes, fuel electrodes or symmetric electrodes produced by technologies from thin films to nanocasting new procedures through electrodes produced by additive manufacturing will be studied operating under fuel cell or electrolysis mode. In this way, the Special Issue will bring a broad overview on the main advantages for the electrodes generated by different innovative technologies.

Dr. Marc Torrell
Prof. Miguel Ángel Laguna Bercero
Guest Editors

Manuscript Submission Information

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Keywords

  • Solid oxide cells
  • Electrodes performance
  • Degradation mechanisms
  • New electrode compositions and architectures
  • Electrolysis
  • Fuel cell

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Published Papers (3 papers)

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Research

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11 pages, 4061 KiB  
Article
Manganese–Cobalt Based Spinel Coatings Processed by Electrophoretic Deposition Method: The Influence of Sintering on Degradation Issues of Solid Oxide Cell Oxygen Electrodes at 750 °C
by Elisa Zanchi, Justyna Ignaczak, Bartosz Kamecki, Piotr Jasiński, Sebastian Molin, Aldo R. Boccaccini and Federico Smeacetto
Materials 2021, 14(14), 3836; https://doi.org/10.3390/ma14143836 - 9 Jul 2021
Cited by 16 | Viewed by 3131
Abstract
This paper seeks to examine how the Mn–Co spinel interconnect coating microstructure can influence Cr contamination in an oxygen electrode of intermediate temperature solid oxide cells, at an operating temperature of 750 °C. A Mn–Co spinel coating is processed on Crofer 22 APU [...] Read more.
This paper seeks to examine how the Mn–Co spinel interconnect coating microstructure can influence Cr contamination in an oxygen electrode of intermediate temperature solid oxide cells, at an operating temperature of 750 °C. A Mn–Co spinel coating is processed on Crofer 22 APU substrates by electrophoretic deposition, and subsequently sintered, following both the one-step and two-step sintering, in order to obtain significantly different densification levels. The electrochemical characterization is performed on anode-supported cells with an LSCF cathode. The cells were aged prior to the electrochemical characterization in contact with the spinel-coated Crofer 22 APU at 750 °C for 250 h. Current–voltage and impedance spectra of the cells were measured after the exposure with the interconnect. Post-mortem analysis of the interconnect and the cell was carried out, in order to assess the Cr retention capability of coatings with different microstructures. Full article
(This article belongs to the Special Issue Performance and Degradation Mechanisms of Electrode Materials for Solid Oxide Cells Devices)
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18 pages, 3036 KiB  
Article
Analysis of Performance Losses and Degradation Mechanism in Porous La2−X NiTiO6−δ:YSZ Electrodes
by Juan Carlos Pérez-Flores, Miguel Castro-García, Vidal Crespo-Muñoz, José Fernando Valera-Jiménez, Flaviano García-Alvarado and Jesús Canales-Vázquez
Materials 2021, 14(11), 2819; https://doi.org/10.3390/ma14112819 - 25 May 2021
Cited by 5 | Viewed by 2397
Abstract
The electrode performance and degradation of 1:1 La2−xNiTiO6−δ:YSZ composites (x = 0, 0.2) has been investigated to evaluate their potential use as SOFC cathode materials by combining electrochemical impedance spectroscopy in symmetrical cell configuration under ambient air at [...] Read more.
The electrode performance and degradation of 1:1 La2−xNiTiO6−δ:YSZ composites (x = 0, 0.2) has been investigated to evaluate their potential use as SOFC cathode materials by combining electrochemical impedance spectroscopy in symmetrical cell configuration under ambient air at 1173 K, XRD, electron microscopy and image processing studies. The polarisation resistance values increase notably, i.e., 0.035 and 0.058 Ωcm2 h−1 for x = 0 and 0.2 samples, respectively, after 300 h under these demanding conditions. Comparing the XRD patterns of the initial samples and after long-term exposure to high temperature, the perovskite structure is retained, although La2Zr2O7 and NiO appear as secondary phases accompanied by peak broadening, suggesting amorphization or reduction of the crystalline domains. SEM and TEM studies confirm the ex-solution of NiO with time in both phases and also prove these phases are prone to disorder. From these results, degradation in La2−xNiTiO6−δ:YSZ electrodes is due to the formation of La2Zr2O7 at the electrode–electrolyte interface and the ex-solution of NiO, which in turn results in the progressive structural amorphization of La18NiTiO6−δ phases. Both secondary phases constitute a non-conductive physical barrier that would hinder the ionic diffusion at the La2−xNiTiO6−δ:YSZ interface and oxygen access to surface active area. Full article
(This article belongs to the Special Issue Performance and Degradation Mechanisms of Electrode Materials for Solid Oxide Cells Devices)
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Review

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25 pages, 29952 KiB  
Review
Degradation Mechanisms of Metal-Supported Solid Oxide Cells and Countermeasures: A Review
by Zhipeng Zhou, Venkata Karthik Nadimpalli, David Bue Pedersen and Vincenzo Esposito
Materials 2021, 14(11), 3139; https://doi.org/10.3390/ma14113139 - 7 Jun 2021
Cited by 37 | Viewed by 6881
Abstract
Metal-supported oxide cells (MSCs) are considered as the third-generation solid oxide cells (SOCs) succeeding electrolyte-supported (first generation) and anode-supported (second generation) cells, which have gained much attention and progress in the past decade. The use of metal supports and advanced technical methods (such [...] Read more.
Metal-supported oxide cells (MSCs) are considered as the third-generation solid oxide cells (SOCs) succeeding electrolyte-supported (first generation) and anode-supported (second generation) cells, which have gained much attention and progress in the past decade. The use of metal supports and advanced technical methods (such as infiltrated electrodes) has vastly improved cell performance, especially with its rapid startup ability and power density, showing a significant decrease in raw materials cost. However, new degradation mechanisms appeared, limiting the further improvement of the performance and lifetime. This review encapsulates the degradation mechanisms and countermeasures in the field of MSCs, reviewing the challenges and recommendations for future development. Full article
(This article belongs to the Special Issue Performance and Degradation Mechanisms of Electrode Materials for Solid Oxide Cells Devices)
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