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Stabilizing Perovskite Structure by Interdiffusional Tailoring and Its Application in Composite Mixed Oxygen‐Ionic and Electronic Conductors
Author(s) -
Fang Wei,
Zhang Chao,
Steinbach Frank,
Feldhoff Armin
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201702786
Subject(s) - perovskite (structure) , materials science , composite number , fluorite , phase (matter) , ionic bonding , chemical engineering , oxygen , phase transition , ionic conductivity , nanotechnology , composite material , chemistry , ion , metallurgy , thermodynamics , electrode , organic chemistry , engineering , physics , electrolyte
Perovskite oxides have been under intense investigation as promising candidates for devices in the field of energy conversion and storage. Unfortunately, these perovskites are probably subjected to a frequent performance loss caused by phase transition. A phase‐stabilization approach via interdiffusional tailoring is identified in perovskite‐based composites. As an example, a phase‐stabilized perovskite‐fluorite composite material with both components possessing cubic symmetry was obtained by an appropriate one‐pot strategy. These findings render possible to develop a high‐performance and extremely stable dual‐phase oxygen‐transporting membrane for intermediate‐temperature air separation as well as syngas production, which also opens up numerous opportunities to overcome the phase‐transition‐induced performance degradation in other systems.