Preparación y caracterización de un semiconductor Nb205-Ce02 utilizable como ánodo en células de combustible
Source abstract
Abstract
espanolLa solucion solida de NbjOs constituye un semiconductor de valencia controlada de tipo p por sustitucion de iones Nb en posiciones Ce y reduccion parcial de los iones cerio. En este trabajo se establece la conductividad maxima, que puede alcanzarse mediante este mecanismo, en funcion de la temperatura. Asimismo, dada su posible aplicacion en celulas de combustible de tipo SOFC, se depositaron peliculas gruesas de este material sobre un electrolito comercial de Y-FSZ mediante colaje en cinta, «tape casting». La interfase electrodoelectrolito se caracterizo mediante microscopia electronica de barrido, voltametria cicica y cronoamperometria EnglishThe Nb205-Ce02 solid solution is a p-type controlled valence semiconductor due to the Nb substitution of Ce sites and the partial reduction of cerium ions. In this work the maximum conductivity than can be reached by this mechanism is stablished as a function of temperature. On the other hand, taking into account its possible application as an electrode for Solid Oxide Fuel Cells, thick films of this material have been deposited over standard Y-FSZ as electrolyte by the Tape-Casting technique. The interface electrodeelectrolyte was characterized by Scanning Electron Microscopy, Cyclic Voltametry and Chronoamperometr
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Fuel Cells and Related Materials · Electrocatalysts for Energy Conversion · Advancements in Solid Oxide Fuel Cells
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