A novel ceramic hydrogen electrode material consisting of K2NiF4-type structured Pr0.8Sr1.2(Co,Fe)(0.8)Nb0.2O4+delta (K-PSCFN) matrix with homogenously dispersed nano-sized Co Fe alloy (CFA) has been demonstrated by annealing perovskite Pr0.4Sr0.6Co0.2Fe0.7Nb0.1O3-delta (P-PSCFN) in H-2 at 900 degrees C. Impedance spectra and voltage current density curves of the La0.8Sr0.2Ga0.83Mg0.17O3-delta (LSGM) electrolyte supported solid oxide electrolysis cell (SOEC) with a configuration of K-PSCFN CFA/LSGM/Ba0.9Co0.7Fe0.2Nb0.1O3-delta (BCFN) have been evaluated as a function of the operating temperature and feeding gas absolute humidity (AH) to characterize the cell performance. Cell polarization resistances (R-p) were as low as 0.77 and 0.31 Omega cm(2) under open circuit voltage (OCV) and 60% absolute humidity (AH) at 800 and 900 degrees C, respectively. The cell has demonstrated good stability for high temperature stream electrolysis, and a hydrogen production rate of 707 ml/cm(2)h calculated from the Faraday's law has been achieved under an electrolysis voltage of 1.3 V and 60 vol.% AH at 900 degrees C. The cell performance results indicate that K-PSCFN-CFA is a promising hydrogen electrode for high temperature solid oxide electrolysis cells. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.