Effect of sintering temperature on the performance of composite La0.6Sr0.4Co0.2Fe0.8O3–Ce0.9Gd0.1O2 cathode for solid oxide fuel cells

A. A. Solovyev, I. V. Ionov, A. V. Shipilova, P. D. Maloney

Результат исследований: Материалы для журналаСтатья

3 Цитирования (Scopus)

Выдержка

Studied here are the effects of sintering temperature of La0.6Sr0.4Co0.2Fe0.8O3-Ce0.9Gd0.1O2 (LSCF–CGO) cathodes on their microstructure and performance of intermediate-temperature solid oxide fuel cells (IT-SOFC). Phase composition, microstructure and electrochemical properties were investigated by X-ray powder diffraction (XRD), scanning electron microscopy and current-voltage characteristics measurement, respectively. The electrochemical performances of Ni–YSZ anode-supported SOFC having YSZ electrolyte (4 μm) with CGO interlayer (2 μm) are studied with LSCF–CGO (50:50 wt%) cathodes in the temperature range 600–800 °C using H2 as fuel and air as oxidant. The cathode microstructure was found to be less dense and to contain smaller grains as the sintering temperature was decreased in the range 1250–1150 °C. Results reveal that sintering temperature and electrode morphology have strong influence on electrochemical performances of the IT-SOFC. Highest maximum power density of ∼1.26 W/cm2 is achieved during cell testing at 800 °C with a cathode sintered at 1200 °C. However, cells with in-situ sintered LSCF–CGO cathode showed highest power density at 600 °C (0.48 W/cm2) because there is no particle coarsening at low sintering temperatures.

Язык оригиналаАнглийский
Страницы (с-по)1-6
Число страниц6
ЖурналJournal of Electroceramics
DOI
СостояниеПринято/в печати - 29 янв 2018

Отпечаток

solid oxide fuel cells
Solid oxide fuel cells (SOFC)
sintering
Cathodes
Sintering
cathodes
composite materials
Composite materials
Temperature
temperature
microstructure
Microstructure
radiant flux density
Coarsening
Current voltage characteristics
yttria-stabilized zirconia
cells
Electrochemical properties
Oxidants
Phase composition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Materials Chemistry
  • Electrical and Electronic Engineering

Цитировать

Effect of sintering temperature on the performance of composite La0.6Sr0.4Co0.2Fe0.8O3–Ce0.9Gd0.1O2 cathode for solid oxide fuel cells. / Solovyev, A. A.; Ionov, I. V.; Shipilova, A. V.; Maloney, P. D.

В: Journal of Electroceramics, 29.01.2018, стр. 1-6.

Результат исследований: Материалы для журналаСтатья

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abstract = "Studied here are the effects of sintering temperature of La0.6Sr0.4Co0.2Fe0.8O3-Ce0.9Gd0.1O2 (LSCF–CGO) cathodes on their microstructure and performance of intermediate-temperature solid oxide fuel cells (IT-SOFC). Phase composition, microstructure and electrochemical properties were investigated by X-ray powder diffraction (XRD), scanning electron microscopy and current-voltage characteristics measurement, respectively. The electrochemical performances of Ni–YSZ anode-supported SOFC having YSZ electrolyte (4 μm) with CGO interlayer (2 μm) are studied with LSCF–CGO (50:50 wt{\%}) cathodes in the temperature range 600–800 °C using H2 as fuel and air as oxidant. The cathode microstructure was found to be less dense and to contain smaller grains as the sintering temperature was decreased in the range 1250–1150 °C. Results reveal that sintering temperature and electrode morphology have strong influence on electrochemical performances of the IT-SOFC. Highest maximum power density of ∼1.26 W/cm2 is achieved during cell testing at 800 °C with a cathode sintered at 1200 °C. However, cells with in-situ sintered LSCF–CGO cathode showed highest power density at 600 °C (0.48 W/cm2) because there is no particle coarsening at low sintering temperatures.",
keywords = "Composite cathode, Intermediate-temperature solid oxide fuel cells, LSCF–CGO, Microstructure, Performance",
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AU - Solovyev, A. A.

AU - Ionov, I. V.

AU - Shipilova, A. V.

AU - Maloney, P. D.

PY - 2018/1/29

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AB - Studied here are the effects of sintering temperature of La0.6Sr0.4Co0.2Fe0.8O3-Ce0.9Gd0.1O2 (LSCF–CGO) cathodes on their microstructure and performance of intermediate-temperature solid oxide fuel cells (IT-SOFC). Phase composition, microstructure and electrochemical properties were investigated by X-ray powder diffraction (XRD), scanning electron microscopy and current-voltage characteristics measurement, respectively. The electrochemical performances of Ni–YSZ anode-supported SOFC having YSZ electrolyte (4 μm) with CGO interlayer (2 μm) are studied with LSCF–CGO (50:50 wt%) cathodes in the temperature range 600–800 °C using H2 as fuel and air as oxidant. The cathode microstructure was found to be less dense and to contain smaller grains as the sintering temperature was decreased in the range 1250–1150 °C. Results reveal that sintering temperature and electrode morphology have strong influence on electrochemical performances of the IT-SOFC. Highest maximum power density of ∼1.26 W/cm2 is achieved during cell testing at 800 °C with a cathode sintered at 1200 °C. However, cells with in-situ sintered LSCF–CGO cathode showed highest power density at 600 °C (0.48 W/cm2) because there is no particle coarsening at low sintering temperatures.

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