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Communication Dans Un Congrès Année : 2022

Synthesis of Yttrium Doped Barium Zirconate/Cerate Electrolyte Materials and Densification Using Conventional and Cold-Sintering Processes

Résumé

Compared to high temperature solid oxide electrolysis cell, usually based on Yttrium stabilized Zirconia electrolytes, intermediate temperature proton conducting electrolysis cell, allows the production of water free hydrogen and a better chemical stability. Proton conducting perovskite materials, such as Barium Indates, Zirconates or Cerates are nearly commercial electrolytes for such devices. At intermediate temperature and under humid atmosphere, hydration process allows diffusion of protonic charges. Such electrolyte material combines a low thermal expansion coefficient and a high protonic conductivity. and The Zirconium rich material BaZr 0.7 Ce 0.2 Y 0.1 O 3-δ that shows a conductivity around 10 -2 S.cm -1 at 500°C will be compared to the Cerium rich BaZr 0.3 Ce 0.6 Y 0.1 O 3-δ material that shows conductivities around 10 -4 S.cm -1 at the same temperature.

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Chimie
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Dates et versions

hal-04266398 , version 1 (06-11-2023)

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Pablo Castellani, Eric Quarez, Clement Nicollet, Olivier Joubert, Annie Le Gal La Salle. Synthesis of Yttrium Doped Barium Zirconate/Cerate Electrolyte Materials and Densification Using Conventional and Cold-Sintering Processes. 242nd ECS Meeting, Fuel Cells, Electrolyzers, and Energy Conversion, Oct 2022, Atlanta (Georgia), United States. pp.13-29, ⟨10.1149/10913.0013ecst⟩. ⟨hal-04266398⟩
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