@inproceedings{5bd8faf31cc84eaf8a80a002fad03b42,
title = "Iron exsolution phenomena in lanthanum strontium ferrite SOFC anodes",
abstract = "The iron exsolution behavior of lanthanum strontium ferrite under reducing conditions is investigated using multiple ex situ and in situ methods. During heating experiments, an irreversible phase transition in oxygen-deficient environments from the rhombohedral to the cubic polymorph is witnessed in the form of a non-linear shift of the reflexes prior to the exsolution of metallic iron. Since this is not the case in oxidative environments, it leads to the conclusion that oxygen vacancies in the lattice stabilize the cubic phase. Also, the exsolution is shown to exhibit an Avramilike behavior, suggesting a diffusion-limited process, where the transport of iron to the Fe-depleted surface-near region is the slowest step.",
author = "T. G{\"o}tsch and C. Praty and M. Gr{\"u}nbacher and L. Schlicker and Bekheet, {M. F.} and A. Doran and A. Gurlo and M. Tada and H. Matsui and N. Ishiguro and B. Kl{\"o}tzer and S. Penner",
note = "Funding Information: T. G{\"o}tsch and M. Gr{\"u}nbacher acknowledge financial support by the Austrian Science Fund (FWF) via grant F4503. The work was performed within the framework of the research platform “Materials-and Nanoscience” and the special PhD program “Reactivity and Catalysis” at the University of Innsbruck. L. Schlicker appreciates the ALS for supporting his work with a doctoral fellowship. This work is part of the Cluster of Excellence “Unifying Concepts in Catalysis” coordinated by the Technische Universit¨at Berlin. Financial support by the Deutsche Forschungsgemeinschaft (DFG) within the framework of the German Initiative for Excellence is gratefully acknowledged. The authors further tank the Advanced Light Source (which is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231), where in situ PXRD measurements were conducted at beamline 12.2.2 in the framework of AP program ALS-08865. Publisher Copyright: {\textcopyright} The Electrochemical Society.; 15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017 ; Conference date: 23-07-2017 Through 28-07-2017",
year = "2017",
month = may,
day = "30",
doi = "10.1149/07801.1327ecst",
language = "English",
series = "ECS Transactions",
publisher = "Electrochemical Society Inc.",
number = "1",
pages = "1327--1341",
editor = "Singhal, {S. C.} and T. Kawada",
booktitle = "ECS Transactions",
edition = "1",
}