The reliable use of alternative solid electrolytes in an intermediate temperature range, namely 600-800°C, is desired to extend life time of employed materials, and to simplify the thermal management in solid oxide fuel cells. Actually, operations in this range are limited, mainly due to the absence of appropriate electrolytes that ensure high performance, in term of conductivity. Gadolinium-doped ceria is the most promising solid electrolyte material for intermediate temperature. The main aim of this study is to implement experimental conductivity data of gadoliniumdoped ceria electrolytes in a computational model to evaluate their potentials and performances. The results suggest that these materials are better than traditional solid electrolytes, due to their improved ion conductivity.
Alternative materials for ITSOFC: Implementation of gadoliniadoped ceria solid electrolytes in a 3D CFD-FEM model for numerical evaluation of performance
DE PERTIS, MARCO;FERONE, Claudio;CIOFFI, Raffaele
2015-01-01
Abstract
The reliable use of alternative solid electrolytes in an intermediate temperature range, namely 600-800°C, is desired to extend life time of employed materials, and to simplify the thermal management in solid oxide fuel cells. Actually, operations in this range are limited, mainly due to the absence of appropriate electrolytes that ensure high performance, in term of conductivity. Gadolinium-doped ceria is the most promising solid electrolyte material for intermediate temperature. The main aim of this study is to implement experimental conductivity data of gadoliniumdoped ceria electrolytes in a computational model to evaluate their potentials and performances. The results suggest that these materials are better than traditional solid electrolytes, due to their improved ion conductivity.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
