Transport properties and oxidation and hydration kinetics of the proton conductor Mo doped Nd5.5WO11.25−δ†
Abstract
Surface exchange and diffusion coefficients of the protonic conductor Nd5.5W0.5Mo0.5O11.25−δ were obtained by means of conductivity relaxation experiments as a function of temperature, pO2 and pH2O. The two-fold non-monotonic behaviour in the hydration/dehydration relaxations allows proton and oxygen vacancy coefficients to be independently determined whereas the H/D isotopic effect was confirmed.