Cyclic voltammetry of LSCF-cathodes formed using combustion method with sucrose as propellant

The electrochemical properties of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3- α (LSCF) cathode materials ceramic oxide were studied. The LSCF oxide powders were prepared using various concentration of sucrose as propellant via combustion method. The concentration of propellant were fixed at 0.05 mol and 0.1 mol. Each samples were calcined at 750 °C for 10 hours. The samples were characterized with cyclic voltammetry (CV), Scanning Electron Microscopy (SEM) and Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). Based on the voltammograms shown from CV, the current increased with increasing sweep rate and concentration of sucrose. The morphology of samples show different surface characteristic for all samples. It was observed that with higher concentration of sucrose, the grain particle become smaller due to the complete combustion occurred during the heating process. Furthermore, the LSCF oxide powders prepared with 0.1 mol sucrose exhibit increased chemical stability throughout the range of the potential given which has been proved by the formation of fine powders and improved electrochemical result.