Electrochemical study of the Nd(1.95)NiO(4 + )(d)/oxide electrolyte interface
Nickelate-based oxides are potential cathodes in Solid Oxide Fuel Cells operating at intermediate temperatures. The chemical compatibility between apatite electrolyte, i.e., La(9)Sr(1)Si(6)O(26.5), and Nd-deficient nickelate, i.e., Nd(1.95)NiO(4 + d), has been characterized. The equilibrium between...
Saved in:
Published in | Solid state ionics Vol. 180; no. 20-22; pp. 1183 - 1189 |
---|---|
Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
01.08.2009
|
Online Access | Get full text |
Cover
Loading…
Summary: | Nickelate-based oxides are potential cathodes in Solid Oxide Fuel Cells operating at intermediate temperatures. The chemical compatibility between apatite electrolyte, i.e., La(9)Sr(1)Si(6)O(26.5), and Nd-deficient nickelate, i.e., Nd(1.95)NiO(4 + d), has been characterized. The equilibrium between the nickelate material and the gas phase has been studied as functions of temperature and oxygen partial pressure, using potentiometric measurements with microelectrodes, i.e., metallic or ceramic point electrodes. Two solid electrolytes were used, i.e., apatite and yttria-stabilized zirconia. The response of the nickelate is discussed in terms of oxygen stoichiometry. |
---|---|
Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-1 |
ISSN: | 0167-2738 |
DOI: | 10.1016/j.ssi.2009.06.011 |