In order to evaluate the feasibility of fuel cells with proton conducting solid-electrolyte ceramics, the proton conductivity of sintered samples of BaZr0.9Y0.1O3-δ was measured with impedance spectroscopy. The processing parameters and stoichiometry strongly affect the proton conductivity of the material. Considerable analogy was shown between doped cerates and doped zirconates.

Proton Conductivity and Phase Composition in BaZr0.9Y0.1O3-δ. F.M.M.Snijkers, A.Buekenhoudt, J.Cooymans, J.J.Luyten: Scripta Materialia, 2004, 50[5], 655-9