Defect equilibria and chemical expansion in non-stoichiometric undoped and gadolinium-doped cerium oxide

Surface and bulk oxygen non-stoichiometr

Surface and bulk oxygen non-stoichiometry and bulk chemical expansion in gadolinium-doped cerium oxide

✍ S.R. Bishop; K.L. Duncan; E.D. Wachsman 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 547 KB

Doped and undoped cerium(IV) oxides are ceramics commonly used as catalysts and as solid oxide fuel cell materials. In low oxygen partial pressure, ceria-based materials become non-stoichiometric and can form defect complexes that hinder ionic conductivity. In addition, oxygen non-stoichiometry indu