In the thin-film solid oxide fuel cell (SOFC) concept of the German Aerospace Center (DLR) in Stuttgart, the entire membrane electrode assembly (MEA) is deposited onto a porous metallic substrate by an integrated multistep vacuum plasma spray (VPS) process. This concept enables the production of very thin and stable electrodes and electrolyte layers with a total cell thickness of only . In this concept, the porous ferrite substrate material predominantly acts as mechanical cell support and as fuel gas distributor. In general, ferrite substrate alloys with high chromium and low manganese content show both excellent corrosion stability and adequate thermal expansion behavior. Nevertheless, at the high process temperature in the SOFC of , atomic transport processes can show a detrimental effect on cell performance, at least at the required long-term operation. Problems arise, in particular, through diffusion processes of Fe-, Cr-, and Ni-species between the Ni/8YSZ anode and the ferrite steel-based substrate material. This can induce significant structure changes both in the anode and the substrate. As a reliable solution of this key problem, a plasma sprayed thin diffusion barrier layer is seen at the interface between anode and substrate, which consists of an electrically conductive and chemically stable ceramic component. For this purpose, some doped perovskite-type , such as , , or were investigated and tested carefully at DLR. These types of perovskites show a high potential to fulfill all the required properties that are needed for the applicability as an anode-side diffusion barrier layer. The paper focuses on basic investigations of differently doped compounds under SOFC-relevant conditions concerning thermal expansion, electrical conductivity, chemical stability, etc. Furthermore, first results of electrically and electrochemically characterized half cells carried out with some qualified doped are shown. Finally, the diffusion barrier layer is demonstrated as a new SOFC component that is effective at cell operating conditions.
Skip Nav Destination
e-mail: thomas.franco@dlr.de
Article navigation
November 2007
This article was originally published in
Journal of Fuel Cell Science and Technology
Technical Papers
Plasma Sprayed Diffusion Barrier Layers Based on Doped Perovskite-Type at Substrate-Anode Interface in Solid Oxide Fuel Cells
T. Franco,
e-mail: thomas.franco@dlr.de
T. Franco
German Aerospace Center (DLR)
, Institute of Technical Thermodynamics, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
Search for other works by this author on:
Z. HoshiarDin,
Z. HoshiarDin
German Aerospace Center (DLR)
, Institute of Technical Thermodynamics, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
Search for other works by this author on:
P. Szabo,
P. Szabo
German Aerospace Center (DLR)
, Institute of Technical Thermodynamics, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
Search for other works by this author on:
M. Lang,
M. Lang
German Aerospace Center (DLR)
, Institute of Technical Thermodynamics, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
Search for other works by this author on:
G. Schiller
G. Schiller
German Aerospace Center (DLR)
, Institute of Technical Thermodynamics, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
Search for other works by this author on:
T. Franco
German Aerospace Center (DLR)
, Institute of Technical Thermodynamics, Pfaffenwaldring 38-40, 70569 Stuttgart, Germanye-mail: thomas.franco@dlr.de
Z. HoshiarDin
German Aerospace Center (DLR)
, Institute of Technical Thermodynamics, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
P. Szabo
German Aerospace Center (DLR)
, Institute of Technical Thermodynamics, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
M. Lang
German Aerospace Center (DLR)
, Institute of Technical Thermodynamics, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
G. Schiller
German Aerospace Center (DLR)
, Institute of Technical Thermodynamics, Pfaffenwaldring 38-40, 70569 Stuttgart, GermanyJ. Fuel Cell Sci. Technol. Nov 2007, 4(4): 406-412 (7 pages)
Published Online: May 2, 2006
Article history
Received:
December 8, 2005
Revised:
May 2, 2006
Citation
Franco, T., HoshiarDin, Z., Szabo, P., Lang, M., and Schiller, G. (May 2, 2006). "Plasma Sprayed Diffusion Barrier Layers Based on Doped Perovskite-Type at Substrate-Anode Interface in Solid Oxide Fuel Cells." ASME. J. Fuel Cell Sci. Technol. November 2007; 4(4): 406–412. https://doi.org/10.1115/1.2756846
Download citation file:
Get Email Alerts
Cited By
State of Health Estimation Method for Lithium-Ion Batteries Based on Multifeature Fusion and BO-BiGRU Model
J. Electrochem. En. Conv. Stor (November 2025)
Nitrogen and Phosphorus Co-Doped Hard Carbon Materials as High-Performance Anode for Sodium Ion Batteries
J. Electrochem. En. Conv. Stor (August 2025)
In-situ synthesis nano PtRuW/WC HER catalyst for acid hydrogen evolution by microwave method
J. Electrochem. En. Conv. Stor
Ultrasound-Enabled Adaptive Protocol for Fast Charging of Lithium-Ion Batteries
J. Electrochem. En. Conv. Stor (August 2025)
Related Articles
Various Lanthanum Ferrite-Based Cathode Materials With Ni and Cu Substitution for Anode-Supported Solid Oxide Fuel Cells
J. Fuel Cell Sci. Technol (December,2010)
Thin Film Solid Oxide Fuel Cells Deposited by Spray Pyrolysis
J. Fuel Cell Sci. Technol (April,2010)
Ni–Fe Alloy-Supported Intermediate Temperature SOFCs Using La Ga O 3 Electrolyte Film for Quick Startup
J. Fuel Cell Sci. Technol (August,2008)
Evaluation of SrTi 1− x Co x O 3 Perovskites (0 ≤ x ≤ 0.2) as Interconnect Materials for Solid Oxide Fuel Cells
J. Fuel Cell Sci. Technol (October,2011)
Related Proceedings Papers
Related Chapters
Hydrogen Uptake and Embrittlement Susceptibility of Ferrite-Pearlite Pipeline Steels
International Hydrogen Conference (IHC 2016): Materials Performance in Hydrogen Environments
Numerical Study on a Novel SOFC with Bi-Layer Interconnector
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
An Easy-to-Approach Comprehensive Model and Computation for SOFC Performance and Design Optimization
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)