Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria
by
Yu Xu 1
, Philipp Zielke 1, Ngo Van Nong 1, Stéven Pirou 1, Raquel Reolon 1, Xiaoqing Si 1,2, Søren Bredmose Simonsen 1, Poul Norby 1, Henning Lühmann 3, Wolfgang Bensch 3 and Ragnar Kiebach 1,*
Yu Xu 1, Philipp Zielke 1, Ngo Van Nong 1, Stéven Pirou 1, Raquel Reolon 1, Xiaoqing Si 1,2, Søren Bredmose Simonsen 1, Poul Norby 1, Henning Lühmann 3, Wolfgang Bensch 3 and Ragnar Kiebach 1,*
1
Department of Energy Conversion and Storage, Technical University of Denmark (Risø Campus), Frederiksborgvej 399, 4000 Roskilde, Denmark
2
State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
3
Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Straße 2, D-24118 Kiel, Germany
*
Author to whom correspondence should be addressed.
Ceramics 2018, 1(2), 246-260; https://doi.org/10.3390/ceramics1020020
Received: 29 August 2018 / Revised: 21 September 2018 / Accepted: 28 September 2018 / Published: 2 October 2018
(This article belongs to the Special Issue Functional Ceramics for Energy Applications)
In this work, nanostructured (La0.6Sr0.4)0.99CoO3 (LSC)-Ce0.8Gd0.2O1.9 (CGO) core-shell particles were prepared by precipitating CGO nanoparticles on the surface of LSC particles under hydrothermal conditions. The as-prepared core-shell particles were sintered by spark plasma sintering (SPS) and conventional sintering, and the microstructure evolution and densification behavior were studied. Dense microstructures were reached using both sintering methods at relatively low temperatures. In the case of SPS, the core-shell architecture was partially maintained and nano-structured CGO grains were formed, while conventional sintering led to the formation of larger CGO grains. This work covers a detailed characterization of (a) the individual LSC-CGO core-shell particles and (b) the composites after densification.
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Keywords:
hydrothermal; core-shell; lanthanum strontium cobaltite; gadolinium-doped ceria; spark plasma sintering
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MDPI and ACS Style
Xu, Y.; Zielke, P.; Van Nong, N.; Pirou, S.; Reolon, R.; Si, X.; Simonsen, S.B.; Norby, P.; Lühmann, H.; Bensch, W.; Kiebach, R. Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria. Ceramics 2018, 1, 246-260.
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