The effect of H2O(g) on the H2 permeation of PdAg membranes is studied.
The Ag substrate is surface modified by suction(S)-assisted method.
PdAg membranes are deposited by electroless and electro plating processes.
The depletion of JH2 due to H2O(g) is only 9% for PdAg on S-substrate.