Effect of total dopant concentration and dopant ratio on conductivity of (DyO1.5)x–(WO3)y–(BiO1.5)1−x−y

✍ Scribed by Doh Won Jung; Keith L. Duncan; Eric D. Wachsman

• Book ID: 103998961
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 746 KB
• Volume: 58
• Category: Article
• ISSN: 1359-6454
• DOI: 10.1016/j.actamat.2009.08.072

✦ Synopsis

Dysprosium-and tungsten-stabilized bismuth oxide (DWSB) electrolytes were developed to achieve higher conductivity. With double doping, stabilization of the cubic phase was achieved with as little as 12 mol.% total dopant concentration, resulting in higher conductivity. The conductivity of DWSB electrolytes increased linearly as the total dopant concentrations decreased with fixed dopant ratio. Overall, DWSB has a closer inherent structure to pure d-Bi 2 O 3 than any singly doped compositions. Both lattice parameter and conductivity linearly extrapolate with total dopant concentration to that of pure d-Bi 2 O 3 , resulting in the ability to stabilize d-phase at lower dopant concentration, and thus achieving higher conductivity.