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LNC-infiltrated La0.8Sr0.2MnO3 (LSM) is studied as oxygen electrode in solid oxide cells (SOCs). Incorporation of small amounts of LNC nanoparticles was found to cause significant increase in the electro-catalytic activity and stability of the LSM oxygen electrodes. In this study, the electrochemical impedance responses of an LSM and LNC-infiltrated LSM electrode were measured at 800 °C in air. Also, activation energy for both LSM and LNC-infiltrated LSM electrodes was measured to be 1.36 eV. Results indicate that polarization resistance (Rp) decreases by increasing temperature and operating in reversible condition. Moreover, infiltrating of LNC nanoparticles decreases the polarization resistance of the LSM oxygen electrode, thus promoting diffusion phenomena. [ABSTRACT FROM AUTHOR]

Nanostructured plate-like manganese cobalt oxide (MCO) was synthesized as the anode material for lithium-ion batteries. Under basic conditions and using a molar ratio of OH-/NO3-= 1.5, crystallite size of 14 nm was found for samples calcined at 350°C. The electrodes were fabricated by mixing MCO as the active material, Super P carbon as the conducting material and polyvinylidene fluoride (PVDF) as the binder in N-methyl-2-pyrrolidone (NMP) solvent. The slurry was coated onto a copper foil substrate. The aim of this investigation is the assessment of deposition parameters on different plausible defects (such as agglomeration/blisters, pinholes/divots, cracks and non-uniform coating) and also electrical behavior of the deposited layer. Because of high degree of agglomeration, mortar method was found to be ineffective while mixing using magnetic stirrer was proved to be more appropriate in terms of final rheology. The optimum value for the binder was found to be 2.73 wt% of the NMP solvent. Effective drying was achieved using hotplate followed by oven drying. SEM analysis revealed the disappearance of the surface cracks when samples are pressed after drying stage. [ABSTRACT FROM AUTHOR]