Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria

Yu Xu; Philipp Zielke; Ngo Van Nong; Stéven Pirou; Raquel Reolon; Xiaoqing  Si; Søren Bredmose Simonsen; Poul Norby; Henning  Lühmann; Wolfgang Bensch; Ragnar Kiebach

doi:10.3390/ceramics1020020

Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria

Yu Xu, Philipp Zielke, Ngo Van Nong, Stéven Pirou, Raquel Reolon, Xiaoqing Si, Søren Bredmose Simonsen, Poul Norby, Henning Lühmann, Wolfgang Bensch, Ragnar Kiebach^*

^*Corresponding author for this work

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Abstract

In this work, nanostructured (La_0.6Sr_0.4)_0.99CoO₃ (LSC)-Ce_0.8Gd_0.2O_1.9 (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.

Original language	English
Journal	Ceramics
Volume	1
Issue number	2
Pages (from-to)	246-260
ISSN	2571-6131
DOIs	https://doi.org/10.3390/ceramics1020020
Publication status	Published - 2019

Keywords

Hydrothermal
Core-shell
Lanthanum strontium cobaltite
Gadolinium-doped ceria
Spark plasma sintering

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Ceramics 01 00020 v2 1 Final published version, 3.87 MB

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Xu, Y., Zielke, P., Van Nong, N., Pirou, S., Reolon, R., Si, X., Simonsen, S. B., Norby, P., Lühmann, H., Bensch, W., & Kiebach, R. (2019). Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria. Ceramics, 1(2), 246-260. https://doi.org/10.3390/ceramics1020020

Xu, Yu ; Zielke, Philipp ; Van Nong, Ngo ; Pirou, Stéven ; Reolon, Raquel ; Si, Xiaoqing ; Simonsen, Søren Bredmose ; Norby, Poul ; Lühmann, Henning ; Bensch, Wolfgang ; Kiebach, Ragnar. / Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria. In: Ceramics. 2019 ; Vol. 1, No. 2. pp. 246-260.

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title = "Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria",

abstract = "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.",

keywords = "Hydrothermal, Core-shell, Lanthanum strontium cobaltite, Gadolinium-doped ceria, Spark plasma sintering",

author = "Yu Xu and Philipp Zielke and {Van Nong}, Ngo and St{\'e}ven Pirou and Raquel Reolon and Xiaoqing Si and Simonsen, {S{\o}ren Bredmose} and Poul Norby and Henning L{\"u}hmann and Wolfgang Bensch and Ragnar Kiebach",

year = "2019",

doi = "10.3390/ceramics1020020",

language = "English",

volume = "1",

pages = "246--260",

journal = "Ceramics",

issn = "2571-6131",

publisher = "MDPI",

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Xu, Y, Zielke, P, Van Nong, N, Pirou, S, Reolon, R, Si, X, Simonsen, SB , Norby, P, Lühmann, H, Bensch, W & Kiebach, R 2019, 'Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria', Ceramics, vol. 1, no. 2, pp. 246-260. https://doi.org/10.3390/ceramics1020020

Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria. / Xu, Yu; Zielke, Philipp; Van Nong, Ngo; Pirou, Stéven; Reolon, Raquel; Si, Xiaoqing ; Simonsen, Søren Bredmose ; Norby, Poul; Lühmann, Henning ; Bensch, Wolfgang; Kiebach, Ragnar.

In: Ceramics, Vol. 1, No. 2, 2019, p. 246-260.

Research output: Contribution to journal › Journal article › Research › peer-review

TY - JOUR

T1 - Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria

AU - Xu, Yu

AU - Zielke, Philipp

AU - Van Nong, Ngo

AU - Pirou, Stéven

AU - Reolon, Raquel

AU - Si, Xiaoqing

AU - Simonsen, Søren Bredmose

AU - Norby, Poul

AU - Lühmann, Henning

AU - Bensch, Wolfgang

AU - Kiebach, Ragnar

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - Hydrothermal

KW - Core-shell

KW - Lanthanum strontium cobaltite

KW - Gadolinium-doped ceria

KW - Spark plasma sintering

U2 - 10.3390/ceramics1020020

DO - 10.3390/ceramics1020020

M3 - Journal article

VL - 1

SP - 246

EP - 260

JO - Ceramics

JF - Ceramics

SN - 2571-6131

IS - 2

ER -

Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria

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