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

• Published in: ECS transactions Vol. 109; no. 13; pp. 13 - 29
• Main Authors: Castellani, Pablo, Nicollet, Clement, Quarez, Eric, Joubert, Olivier, Le Gal La Salle, Annie
• Format: Journal Article
• Language: English
• Published: The Electrochemical Society, Inc 30.09.2022; Electrochemical Society, Inc
• Subjects: Chemical Sciences
• ISSN: 1938-5862; 1938-6737
• DOI: 10.1149/10913.0013ecst

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.