Oxygen exchange in Pr2NiO4+delta, at high temperature and direct formationof Pr4Ni3O10-x

Authors
Odier, P Allancon, C Bassat, JM
Citation
P. Odier et al., Oxygen exchange in Pr2NiO4+delta, at high temperature and direct formationof Pr4Ni3O10-x, J SOL ST CH, 153(2), 2000, pp. 381-385
Citations number
28
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF SOLID STATE CHEMISTRY
ISSN journal
00224596 → ACNP
Volume
153
Issue
2
Year of publication
2000
Pages
381 - 385
Database
ISI
SICI code
0022-4596(200009)153:2<381:OEIPAH>2.0.ZU;2-P
Abstract
We have studied the stability of Pr2NiO4+delta under pure oxygen flow by in situ measurement of its weight versus T. Above 850 degrees C a fast oxidat ion is observed corresponding to the ex-solution of PrOy species and to the formation of metallic Pr4Ni3O10-x. This reaction is not reversible. The qu antity of exchanged oxygen, its fast kinetics, and the metallic behavior of the composite suggest that this material should have interesting applicati ons for electrodes of solid oxide fuel cells. (C) 2000 Academic Press.