Solid oxide fuel cells are a technology that can convert chemical energy directly into electrical energy. In the present study, single-phase lanthanium strontium manganate (LSM) nanoparticles with the nominal chemical formula La0. 8Sr0. 2MnO3 were successfully synthesized by the improved Pechini method. The infiltration of heterogeneous copper and cerium electrocatalysts on the Cathode was investigated. X-ray diffraction (XRD) was used to determine the phase composition. The microstructure and surface morphology of the synthesized powder was characterized using a scanning electron microscope (SEM). The coated composition was examined using energy dispersive spectroscopy (EDS) and elemental mapping images. The microstructure of the electrocatalysts seeded on the Cathode was studied by FESEM. The infiltration of 0. 5 M copper + 0. 5 M cerium nanoparticles (dimensions from 23 to 52 nm) with a broad distribution on the LSM Cathode surface was obtained. Results showed that using single-component solutions of copper and cerium nanoparticles with dimensions of 39-61 nm and 20-42 nm, respectively, were generated on the Cathode surface. The formation of agglomerated particles was observed as the cerium solution concentration increased. Secondary copper growth was observed as the copper solution concentration increased.

In the present study, the effect of porosity on the Cathode microstructure (50: 50 wt. % LSM: YSZ) of a Solid Oxide Fuel Cell (SOFC) has been examined. A 3-D finite element method for Mixed Ionic and Electronic Conducting Cathodes (MIEC) is presented to study the effects of porosity on cell performance. Each microstructure was realized using the Monte Carlo approach with the isotropic type of growth rate. The effect of porosity on the Cathode of a solid oxide fuel cell involving the Three Phase Boundary Length (TPBL), electric conductivity of LSM phase, ionic conductivity of YSZ, mechanical behavior and tortuosity of the pore phase were explored in the present work. The Cathode having a porosity value between 31 and 34% revealed the maximum TPBL value as well as a high variation in the electrical conductivity of the LSM phase. Pore phase tortuosity was also decreased by increasing the porosity factor.

Linear electric motors can drive a linear motion load without intermediate gears, screws or crank shafts. A linear synchronous motor (LSM) is a linear motor in which the mechanical motion is in synchronism with the magnetic field, i.e. the mechanical speed is the same as the speed of traveling magnetic field. In this paper, we obtained the electromagnetic thrust developed by a salient-pole LSM.

The doped perovskite oxides such as La0.65 Sr0.30 MnO3-δ (LSM), La0.70 Sr0.30 CoO3-δ (LSC), La0.65 Sr0.30 FeO3-δ (LSF), La0.65 Sr0.30 NiO3-δ (LSN) and La0.60 Sr0.40 Co0.20 Fe0.80 O3-δ (LSCF) are proposed as alternate Cathode materials for solid oxide fuel cells working at reduced temperature (<1073 K). The critical requirement for their applicability is their chemical compatibility in conjunction with an alternate solid electrolyte, La0.9 Sr0.1 Ga0.8 Mg0.2 O3-δ (LSGM) without any new phase formation. To understand the chemical reactivity between these two components, thoroughly mixed different Cathode and LSGM electrolyte (1:1 by wt.) powders were pressed as circular components and subjected to annealing at 1573 K for 3 h in air. XRD and SEM were used for the characterization of the annealed samples. XRD measurements revealed that no new secondary phases were formed in LSM, LSC, and LSF with LSGM mixtures whereas LSN and LSCF with LSGM resulted in the formation of new secondary phases after high temperature treatment. The sintering shrinkage for all the components (Cathode + electrolyte mixture) was also estimated. For comparison of data, the individual powders (Cathode/electrolyte) were also compacted and studied in the same manner. The obtained results are discussed keeping in view the requirements that the candidate Cathode material must meet out with respect to its chemical compatibility to qualify for the LSGM based ITSOFC systems at 1073 K.