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Study and improvement of sealing solutions for solid oxide cells

Abstract : Solid oxide cells (SOC) stacks are by design mechanical complex structures. Ensuring the sealing of this ceramic/metallic multilayer assembly fed with different gases is technically very challenging. The efficient sealing of the stack inner structure and of the mechanical interface between the stack and its inlet/outlet interfaces is however mandatory to allow a proper operation of a SOC stack. The sealing being a critical technical issue for the development of industrial systems analyses of the stack vitroceramic/glass cement were conducted in relevant conditions (high temperature, pressure, SOC standard gases) to qualify and understand their thermomechanical properties and technical limits. The first phase focused on the analysis of vitroceramic seals structures linked to the initial condition and fabrication process. First results, obtained by image analysis show a strong impact of the thermal cycle on the sealing material porosity (Figure 1). These analyses were completed by mechanical tests and leak-rate measurements. This paper presents an overview of this work, the technical means and equipment gathered to address the stack sealing issues and the preliminaries outcomes.
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https://hal-cea.archives-ouvertes.fr/cea-03773886
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Submitted on : Friday, September 9, 2022 - 3:30:54 PM
Last modification on : Tuesday, September 13, 2022 - 3:50:55 AM

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  • HAL Id : cea-03773886, version 1

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Karl Vulliez, Annabelle Laplace-Ploquin, Géraldine Palcoux, Stéphane Di Iorio, Livia Ceruti, et al.. Study and improvement of sealing solutions for solid oxide cells. EFCF 2022: 15th European SOFC & SOE Forum, Jul 2022, Lucerne, Switzerland. ⟨cea-03773886⟩

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