Work

Phase Interaction and Distribution in Mixed Ionic Electronic Conducting Ceria‐Spinel Composites

Year: 2017

Type: other

Abstract: This chapter discusses how the microstructure analysis showed reversible and thus temporary spinel decomposition at sintering temperature as well as phase interaction forming a Gd- and Fe-rich orthorhombic perovskite with traces of Ce and Co in an experiment. Various ratio combinations of GDC Ce0.8Gd0.2O2-8) and FCO (FeCo2O4) were synthesized, and their dense pellets were studied for their mixed conductivity by measuring their oxygen flux performance at high temperatures. The polarization resistance of the electrodes was tested at temperatures between 600 and 900°C by electrochemical impedance spectroscopy (EIS) in order to estimate the suitability of GDC-FCO composites as SOFC dual phase cathode material. Semi quantitative estimation of the elements from the EDS elemental mapping image provides a hint on the approximate composition of the perovskite phase that is formed in these dual phase composites during the sintering process.

Source: Ceramic engineering and science proceedings

DOI: 10.1002/9781119320197.ch9

Authors: M. Ramasamy, S. Baumann, A. Opitz, R. Iskandar, J. Mayer, D. Udomsilp, U. Breuer, M. Bram

Institutions: Forschungszentrum Jülich, TU Wien, RWTH Aachen University

Language: English

Topic: Advancements in Solid Oxide Fuel Cells

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

Funders: European Commission, Bundesministerium für Bildung und Forschung, Technische Universität Wien

OpenAlex ID: W2582457478

Cites: 16

Cited by: 8

Related to: 10