Electrochemical characterization of gadolinia-doped ceria using impedance spectroscopy and dc-polarization

►Chemical diffusion coefficient, ionic and electronic conductivity of Gd0.1Ce0.9O1.95. ►Application of impedance spectroscopy and galvanostatic dc-polarization experiments. ►Ionically blocking electrodes even without glass seals at p(O2) < 10− 15 bar (700 °C).