Dense mixed proton and electron conducting membrane made of

BaCe0.95Nd0.05O3−δ (BCNd5) was prepared by pressing followed by sintering. X-ray

diffraction (XRD) was used to characterize the phase structure of both the powder

and the sintered membranes. The microstructure of the sintered membranes was

studied by scanning electron microscopy (SEM). Hydrogen permeation through the

BCNd5 membrane was studied using a high temperature permeator. The hydrogen

permeation fluxes under wet conditions were higher than those under dry

conditions, which was due to H+ hopping via surface OH groups. At 925C, a

hydrogen permeation flux of 0.02mL/mincm2 was obtained under wet condition,

which recommends BCNd5 as a potential material for hydrogen-selective

membranes.

Preparation and Hydrogen Permeation Properties of BaCe0.95Nd0.05O3−δ

membranes. M.Y.Cai, H.X.Luo, Z.Li, A.Feldhoff, J.Caro, H.H.Wang: Chinese

Chemical Letters, 2008, 19[10], 1256-9