INVESTIGADORES
MOGNI Liliana Veronica
artículos
Título:
La2NiO4Dd as cathode for SOFC: Reactivity study with YSZ and CGO electrolytes
Autor/es:
A. MONTENEGRO HERNÁNDEZ; L. MOGNI; A. CANEIRO
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2010 vol. 35 p. 6031 - 6036
ISSN:
0360-3199
Resumen:
In this work was studied the electrochemical response of La2NiO4+d compound by impedancespectroscopy measurements. This compound is a potential cathode material to beused in Solid Oxide Fuel Cell (SOFC). The area specific resistances (ASR) of a La2NiO4+d/YSZ/La2NiO4+d symmetrical cell were determined between 600 and 800 ºC. The ASR values increases with time suggesting a chemical reaction between the cells components.Reactivity studies were carried out between La2NiO4+d and both YSZ and CGO electrolytes.The reactivity studies were performed by means of two different tests: La2NiO4+d filmsdeposited onto both electrolytes and heated at 900 ºC for 72 h (Pellet Test), and intimatemixture of La2NiO4+d with either YSZ or CGO powders were heat treated at 900 ºC during 2 h (Powders Test). In each case the reaction products were evaluated by XRD. Both studiessuggest a high reactivity between the electrode (La2NiO4þd) and the electrolytes (YSZ, CGO)
