Crystallographic, thermal and electrochemical properties of the system La1−xSrxMnO3 for high temperature solid electrolyte fuel cells

Nanoscale analysis of a Co-SrTiO3 interface in a Magnetic tunnel junction

“…The bright dots seen in the LSMO correspond to the projection of MnO atomic columns, whereas lanthanum/strontium columns are imaged weakly [3]. For the clarity of the interpretations, we refer to the pseudo-cubic unit cell of LSMO (instead of the R-3C rhombohedral one) for which the lattice parameter is ao = 0.3873 nm and the pseudo-cubic angle is a= 90.260 [12]. This symmetry is preferred because of its similarity to the STO symmetry (ao= 0.3905 nm, a= 900).…”

Synthesis of oxyanion-doped barium strontium cobalt ferrites: Stabilization of the cubic perovskite and enhancement in conductivity

“…In the case of phosphate doping, (Co/Fe) 4+ is being partially replaced by higher valent P 5+ 2. The introduction of P/B on the perovskite octahedral cation site requires the creation of oxygen vacancies to convert the coordination to tetrahedral (as required for PO 4 3-or BO 4 5-), which in turn leads to a requirement for partial reduction of Co/Fe.…”

“…Although La 1−x Sr x MnO 3−δ (LSM) is commonly used as a cathode in high temperature SOFC [3][4][5][6], it cannot be used for intermediate temperature solid oxide fuel cells (IT-SOFC) operating at <800 ºC as the activation polarization of LSM increases considerably with decreasing temperature [7].…”

Estructura cristalina y propiedades eléctricas de soluciones sólidas YCu_xMn_1-xO₃

“…Se ha desarrollado un extenso trabajo sobre las propiedades de las manganitas de TR ligeras, particularmente sobre el conocimiento de las características del compuesto LaMnO 3 , modificado mediante la sustitución de Sr 2+ o Ca 2+ por La 3+ (1). La utilización de estas soluciones sólidas como electrodos cerámicos en pilas de combustible de óxidos sólidos (SOFC's) ha sido estudiada desde hace muchos años (2).…”