Filters
Results 1 - 1 of 1
Results 1 - 1 of 1.
Search took: 0.023 seconds
AbstractAbstract
[en] This study deals with the elaboration and the characterisation of the three components of a SOFC cell working at intermediate temperature (650-750 C). A pure ionic conductivity of 9x10-3 S.cm-1 was found at 700 C for the retained electrolyte of composition La9Sr1Si6O26.5. This material with an apatite structure is chemically compatible with the mixed conducting cathode material Nd1.95NiO4+δ. The study of the oxygen reduction process showed that the reaction is limited by the oxide ions transfer at the interface cathode/electrolyte. The anodic cermet Ni-apatite was elaborated by impregnation of the porous matrix with a nickel salt. This method allowed a better stabilisation of the nickel phase in the host structure. Thus this work provides evidence for the interest of a new ITSOFC based on a silicate electrolyte.
[fr]
Ce travail est consacre a l'elaboration et a la caracterisation des trois elements d'une cellule SOFC fonctionnant a temperature intermediaire (650-750 C). Une conductivite purement ionique de 9x10-3 S.cm-1 a ete mesuree a 700 C sur l'electrolyte retenu de composition La9Sr1Si6O26.5. Cette ceramique de structure apatite est stable chimiquement au contact du materiau de cathode conducteur mixte Nd1.95NiO4+δ. L'etude de la reduction de l'oxygene a montre que l'etape limitante est le transfert des ions oxyde a l'interface cathode/electrolyte. Le cermet anodique Ni-apatite a ete elabore par impregnation de la matrice poreuse d'apatite par un sel de nickel. Cette methode permet une meilleure stabilisation du nickel dans la structure hote. Ces travaux mettent en evidence l'interet d'une nouvelle cellule SOFC fonctionnant a temperature intermediaire composee d'electrolyte de structure apatiteOriginal Title
Caracterisation electrochimique de materiaux ceramiques a microstructure controlee pour piles a combustible SOFC fonctionnant a temperature reduite
Primary Subject
Source
2006; 202 p; 331 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses; Electrochimie
Record Type
Report
Literature Type
Thesis/Dissertation
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue