{"id":114497,"date":"2013-12-07T00:00:00","date_gmt":"2013-12-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/interconectores-metalicos-y-capas-protectoras-para-su-aplicacion-en-pilas-sofc\/"},"modified":"2013-12-07T00:00:00","modified_gmt":"2013-12-07T00:00:00","slug":"interconectores-metalicos-y-capas-protectoras-para-su-aplicacion-en-pilas-sofc","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica-del-estado-solido\/interconectores-metalicos-y-capas-protectoras-para-su-aplicacion-en-pilas-sofc\/","title":{"rendered":"Interconectores met\u00e1licos y capas protectoras para su aplicaci\u00f3n en pilas sofc"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Veronica Miguel Perez <\/strong><\/h2>\n<p>Uno de los requisitos para lograr la comercializaci\u00f3n de las pilas de combustible de \u00f3xido s\u00f3lido (sofc), es disminuir su temperatura de operaci\u00f3n. Para ello, es necesario disponer de materiales con buenas propiedades el\u00e9ctricas y termomec\u00e1nicas para su funcionamiento a temperaturas comprendidas entre 500-800 \u00c2\u00bac. Los materiales met\u00e1licos utilizados como interconectores en sustituci\u00f3n de los materiales cer\u00e1micos son una buena alternativa para disminuir la temperatura de operaci\u00f3n. Estos materiales tienen la ventaja de presentar mejor compatibilidad qu\u00edmica, mejores propiedades mec\u00e1nicas, alta conductividad t\u00e9rmica y bajo coste. Uno de los problemas relacionados con la degradaci\u00f3n de las celdas sofc, es el envenenamiento del c\u00e1todo (la0.6sr0.4feo3), por las especies de cromo provenientes de los interconectores (crofer 22 apu, ss430 y conicro 4023 w 188), cuando se exponen a largos periodos de oxidaci\u00f3n en las condiciones de operaci\u00f3n, que reducen los sitios activos electroqu\u00edmicos e interaccionan con el material c\u00e1todo dando lugar a fases de baja conductividad el\u00e9ctrica que hacen que el rendimiento de las celdas sea menor.Para reducir la difusi\u00f3n de cromo de los interconectores y evitar la cristalizaci\u00f3n de subproductos en el c\u00e1todo, se propone emplear dos materiales con estructura espinela (mnco2o4 y mnco1.9fe0.1o4) entre los interconectores y el c\u00e1todo. El objetivo principal de este trabajo es analizar los procesos de oxidaci\u00f3n de los materiales met\u00e1licos utilizados como interconectores, los procesos que ocurren en las interfases c\u00e1todo-capa protectora-interconector, as\u00ed como la influencia del m\u00e9todo de deposici\u00f3n en el diferente comportamiento de las capas protectoras, a partir de las propiedades estructurales, microestructurales, espectrosc\u00f3picas y electroqu\u00edmicas.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Interconectores met\u00e1licos y capas protectoras para su aplicaci\u00f3n en pilas sofc<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Interconectores met\u00e1licos y capas protectoras para su aplicaci\u00f3n en pilas sofc <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Veronica Miguel Perez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Pa\u00eds vasco\/euskal herriko unibertsitatea<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 12\/07\/2013<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Ana Martinez Amesti<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jos\u00e9 Mar\u00eda Amigo descarrega <\/li>\n<li>Francisco Javier Belzunce varela (vocal)<\/li>\n<li>angel Larrea arbaizar (vocal)<\/li>\n<li>Mar\u00eda  Luisa No sanchez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Veronica Miguel Perez Uno de los requisitos para lograr la comercializaci\u00f3n de las pilas de combustible de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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