Electrochemical performance of nanostructured LNF infiltrated onto LNO cathode for BaZr_(0.1)Ce_(0.7)Y_(0.2)O_(3-δ)-based solid oxide fuel cell

摘要

In this paper, the electrochemical performance of nanostructured LaNi0.6Fe0.4O3-delta (LNF) infiltrated La2NiO4+delta (LNO) material was evaluated as a potential cathode for BaZr0.1Ce0.7Y0.2O3-delta (BZCY)-based proton-conducting solid oxide fuel cell (H-SOFC). The performance of LNO backbone cathodes with different loading amounts of LNF infiltrated phase were investigated, and electrochemical studies implied that the single cell with about 31 wt % LNF infiltrated cathode exhibited the lowest polarization resistance of 0.027 Omega cm(2) and the highest maximum power density of 969 mWcm(-2) at 700 degrees C, which were encouraging compared with that in previous reports of cobalt-free cathodes for H-SOFCs. This work demonstrated that the infiltrated LNF-LNO cathode had a great potential for H-SOFC and the optimization of the loading amount of LNF nanoparticles on LNO was critical for the fuel cell performance. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.