Electrochemical performance of NiCo2O4 spinel cathodes for intermediate temperature solid oxide fuel cells

Electrochemical performance of NiCo2O4 spinel cathodes for intermediate temperature solid oxide fuel cells

It’s a great challenge to develop the highly efficient cathode material for solid oxide fuel cells (SOFCs) at intermediate temperature, while high electronic conductivity, good thermal and chemical compatibility, and superior electrochemical performance of the AB2O4 type spinel is attractive electrode material. In this work, we developed the NiCo2O4 spinel by using the glycine-nitrate process (GNP) method as a cathode material for IT-SOFCs. The characterization of the phase structure, microstructure, and electrochemical performance were done using X-ray diffraction, scanning electronic microscopy, and electrochemical impedance spectroscopy. The results show that NiCo2O4 exhibited a single cubic structure and good chemical compatibility with a ((Sc2O3)0.1(CeO2)0.01(ZrO2)0.89) (ScCeSZ) electrolyte material at 900 oC for 10 h. Furthermore, a NiO-YSZ anode |NiO-YSZ, AFL | ScCeSZ |NiCo2O4 SOFC cell exhibited the maximum power density (MDP) of 0.73 and 1.04 W cm-2 at 750 and 800 oC, respectively. These results recommended the spinel structured NiCo2O4 is a potential cathode material for IT-SOFC application.

Journal: physica status solidi (a) applications and materials science

IF: 1.98

Link

Leave a Reply