Steel Coatings For Reducing Degradation in SOFC

SCORED 2.0
Project Information
Framework Programme: 
FP7
Call for proposals: 
2012
Application area: 
Stationary power production and CHP
Logo: 

The economic viability and market place entry of SOFC power systems is directly dependent on their longevity and production costs. Adequate operational life spans can only be achieved, if the performance degradation of the SOFC stacks and Balance of Plant components over time can be considerably reduced. At the same time, manufacturing costs have to be lowered dramatically for the specifically necessary components securing the long component service life.

As of now, chromium deactivation of the cathode is considered one of the major contributions to the degradation of SOFC stacks. Since chromium steels, on the other hand, are an essential material in reducing stack costs, methods have to be found to make best use of their advantages whilst avoiding chromium transport to the cathode.

Balance of Plant components upstream of the cathode also contribute to the chromium immission, a fact that is often overseen and requires protective coatings also for any components situated in the air flow pathway to the cathode. Finally, the build-up of oxide scales will influence the electrical resistance and contact resistance thus requiring coatings for the stabilisation of the contacts on both cathode and anode side of the SOFC cell.

Within the project Real-SOFC first steps have been made towards developing suitable combinations of steels and coatings. It has become apparent that any steel will require a coating in order to sufficiently reduce chromium evaporation and oxide layer build-up, and also sustain a low surface resistivity. More recently, a variety of new coating techniques have been reported that require further evaluation under SOFC relevant operating conditions.

The project proposed here aims to further elaborate on the production of coated steel components showing markedly improved properties with regard to chromium release, electrical resistivity and scale growth. The focus of ScoReD 2:0 will be on choosing optimised combinations of protective layer materials with different steel qualities (including low-cost options) and analysing the influence, practicality and cost of different methods of coating. Also in understanding which factors influence the efficacy of such coatings.

Project details
Project reference: 
325331
Topic: 
SP1-JTI-FCH.2012.3.4 Component and sub-system cost and reliability improvement for critical path items in stationary power and CHP fuel cell systems
Project type: 
Research and technological development
Contract type: 
Collaborative Project
Start date: 
Monday, July 1, 2013
End date: 
Friday, June 30, 2017
Duration: 
30 months (originally), extended to 36 months, then to 48 months
Project cost: 
€ 3,656,757.60
Project funding: 
€ 2,183,023
Coordinator: 

THE UNIVERSITY OF BIRMINGHAM, United Kingdom

Contact: 
Prof. Robert Steinberger-Wilckens
Other participating organisations: 
TEKNOLOGIAN TUTKIMUSKESKUS VTT Finland
ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE Switzerland
AGENZIA NAZIONALE PER LE NUOVE TECNOLOGIE, L'ENERGIA E LO SVILUPPO ECONOMICO SOSTENIBILE Italy
Teer Coatings Limited United Kingdom
Turbocoating s.p.a. Italy
SOFCPOWER SPA Italy
Patents and Publications
Publications: 
J. Tallgren , M. Bianco , O. Himanen , O. Thomann , J. Kiviaho , J. van Herle ECS Transactions Vol. 68/Issue 1 Evaluation of Protective Coatings for SOFC Interconnects
J.-E. Hong , M. Bianco , J. Van herle , R. Steinberger-Wilckens ECS Transactions Vol. 68/Issue 1 Properties of Spinel Protective Coatings Prepared Using Wet Powder Spraying for SOFC Interconnects
A. Masi , S. Frangini , L. Della Seta , S. J. McPhail , M. Carlini Journal of the Electrochemical Society Vol. 164/Issue 7 Composite Cu-LaFeO 3 Conversion Coatings on a 18Cr Ferritic Stainless Steel for IT-SOFC Interconnects: An Investigation on Structure and Formation Mechanism
A. Masi , S. Frangini , D. Pumiglia , L. Della Seta , A. Masci , S. J. McPhail , M. Carlini Materials and Corrosion - Werkstoffe und Korrosion Vol. 68/Issue 5 LaFeO 3 perovskite conversion coatings grown on a 13Cr ferritic stainless steel: a corrosion degradation study in simulated solid oxide fuel cell (SOFC) interconnect conditions at 700??C
Andrea Masi , Stefano Frangini , Livia Della Seta , Stephen J. McPhail , Davide Pumiglia , Maurizio Carlini ECS Transactions Vol. 75/Issue 27 Composite Cu-LaFeO 3 Coating on High Cr Ferritic Stainless Steels for IT-SOFC Interconnects
A. Masi , M. Bellusci , M. Carlini , S. J. McPhail , D. Pumiglia , P. Reale , A. Rinaldi , F. Padella ECS Transactions Vol. 68/Issue 1 Protective Coating from Manganese Cobalt Oxide Powders Obtained By High Energy Ball Milling: Materials Characterization and Cell Environment Testing
A. Masi , S. Frangini , M. Carlini , A. Masci , S. J. McPhail ECS Transactions Vol. 68/Issue 1 Evaluation of a Novel Perovskite-Based Conversion Coating for Corrosion Protection of 13Cr Ferritic Stainless Steels under Relevant SOFC Oxidizing Conditions
Andrea Masi , Mariangela Bellusci , Maurizio Carlini , Stephen J. McPhail , Franco Padella , Priscilla Reale Journal of the American Ceramic Society Vol. 99/Issue 1 Mechanochemical Processing of Mn and Co Oxides: An Alternative Way to Synthesize Mixed Spinels for Protective Coating
Andrea Masi , Mariangela Bellusci , Stephen J. McPhail , Franco Padella , Priscilla Reale , Jong-Eun Hong , Robert Steinberger-Wilckens , Maurizio Carlini Ceramics International Vol. 43/Issue 2 The effect of chemical composition on high temperature behaviour of Fe and Cu doped Mn-Co spinels
Andrea Masi , Mariangela Bellusci , Stephen J. McPhail , Franco Padella , Priscilla Reale , Jong-Eun Hong , Robert Steinberger-Wilckens , Maurizio Carlini Journal of the European Ceramic Society Vol. 37/Issue 2 Cu-Mn-Co oxides as protective materials in SOFC technology: The effect of chemical composition on mechanochemical synthesis, sintering behaviour, thermal expansion and electrical conductivity
M.Oum, J.Andrews, R.Steinberger-Wilckens ECS Transactions 78 Modelling Microstructural and Chemical Degradation of Ferritic Stainless Steels for SOFC Interconnects.
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