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  4. CFY-stack technology: The next design
 
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2015
Conference Paper
Title

CFY-stack technology: The next design

Abstract
The stack concept of electrolyte supported cells is applicable for SOFC as well as SOEC. High power densities and efficiencies comparable to stacks based on anode supported cells can be achieved, however, in unison with higher robustness. Incorporating an electrolyte made of fully scandia-stabilized zirconia paired with chromium-based CFY interconnects of matched CTEs, a feasible stack concept was created with the focus on long-term stability in regard to high temperature corrosion and thermal cycling. Onward development of the stack design as well as stack data of more than 20,000 hours of a single stack are presented. Using the same material combinations and the same footprint as for the MK351-design, the newly developed MK352-design allows for easier stack assembling and system integration. Slight modifications in interconnect design enable lower pressure drops over the stack, which, paired with enhanced tolerance chains lead to enhanced stack performance, especially in regard to system cycling.
Author(s)
Bienert, Christian
Plansee Innovation Services
Brandner, Marco
Plansee Innovation Services
Skrabs, S.
Plansee Innovation Services
Venskutonis, Andreas
Plansee Innovation Services
Sigl, L.S.
Plansee Innovation Services
Megel, Stefan  
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Beckert, Wieland  
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Trofimenko, Nikolai  
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Kusnezoff, Mihails  
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Michaelis, Alexander  orcid-logo
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Mainwork
Solid oxide fuel cells 14 (SOFC-XIV)  
Conference
International Conference on Electrochemical Energy Conversion and Storage 2015  
International Symposium on Solid Oxide Fuel Cells (SOFC) 2015  
Open Access
File(s)
Download (753.82 KB)
DOI
10.24406/publica-r-389086
10.1149/06801.2159ecst
Language
English
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Keyword(s)
  • digital storage

  • electrolytes

  • fuel storage

  • regenerative fuel cells

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