Copper cobalt spinel as a high performance cathode for intermediate temperature solid oxide fuel cells†
Abstract
CuCo2O4 spinel prepared via an EDTA–citric acid process was studied as a candidate solid oxide fuel cell (SOFC) cathode material at intermediate temperatures (IT). CuCo2O4 cathodes were measured using thermal gravimetric analysis, X-ray diffraction and scanning electron microscopy. AC impedance spectroscopy and DC polarization measurements were used to study the electrode performance. The obtained value of the polarization resistances at 800 °C was 0.12 Ω cm2 with a maximum power density of 972 mW cm−2.