Design, synthesis, structure and properties of Ba-doped derivatives of SrCo0.95Ru0.05O3−δ perovskite as cathode materials for SOFCs

We have designed and prepared a novel cathode material for solid oxide fuel cell (SOFC) based on SrCo0.95Ru0.05O3−δ perovskite. We have partially replaced Sr by Ba in Sr0.9Ba0.1Co0.95Ru0.05O3−δ (SBCRO) in order to expand the unit-cell size, thereby improving the ionic diffusion of O2− through the crystal lattice. The characterization of this new oxide has been studied at room temperature by X-ray diffraction (XRD) and neutron powder diffraction (NPD) experiments. At room temperature, SBCRO perovskite crystallizes in the P4/mmm tetragonal space group, as observed from NDP data. The maximum conductivity value of 18.6 S cm−1 is observed at 850 °C. Polarization resistance measurements on LSGM electrolyte demonstrate an improvement in conductivity with respect to the parent Sr-only perovskite cathode. A good chemical compatibility and an adequate thermal expansion coefficient make this oxide auspicious for using it as a cathode in SOFC.This research was funded by Spanish Ministry of Industry and Competitiveness, project number MAT2017-84496-R, Spain.Peer reviewe

Digital systems by app and QR code applied to teach Color subject

El proyecto consiste en el diseño, elaboración y puesta en marcha de un sistema de información digital que permite la integración de las últimas tecnologías de comunicación por medio del móvil en los sistemas de enseñanza prácticos de materias relativas a las medidas colorimétricas.Project is about design, development and setup of a digital information system for the integration of nowdays technologies of comunication tools by mean of movilphone into teaching of color subject.Sección Deptal. de Óptica (Óptica)Fac. de Óptica y OptometríaFALSEsubmitte