Influence of sintering temperature on the power density of samarium-doped-ceria carbonate electrolyte composites for low-temperature solid oxide fuel cells

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Abstract

The effects of sintering temperature on the current-voltage (I-V) performance of symmetrical cells with an SDCC electrolyte composite were evaluated in this study. The SDCC electrolyte composite was prepared by mixing 80 wt% SDC with 20 wt% Li and Na carbonate (Li/Na ratio of 2/1) via a solid state reaction method. The resultant SDCC electrolyte composite powder was uniaxially pressed into a circular pellet and sintered at 500 °C, 550 °C, 600 °C and 650 °C for 5 h. A symmetrical cell was finally fabricated by painting a conductive silver paste on both sides of the dense SDCC electrolyte composite pellet, and its I-V performance was measured using hydrogen and air as the fuel and oxidant, respectively. The phase structure and microstructure of the composite powders were investigated using an X-ray diffractometer, field emission scanning electron microscope, and transmission electron microscope. Ceramic pellets sintered at 550 °C exhibited a maximum power density of 63.3 mW/cm2 and an open circuit voltage of 1.14 V at an operating temperature of 650 °C. This study contributes to the development of SDCC electrolyte composite substrates for electrolyte-supported low-temperature SOFCs.

Original languageEnglish
Pages (from-to)5813-5820
Number of pages8
JournalCeramics International
Volume39
Issue number5
DOIs
Publication statusPublished - Jul 2013

Fingerprint

Samarium
Carbonates
Cerium compounds
Solid oxide fuel cells (SOFC)
Electrolytes
Sintering
Composite materials
Powders
Temperature
Electron microscopes
Diffractometers
Painting
Open circuit voltage
Phase structure
Ointments
Solid state reactions
Oxidants
Silver
Field emission
Hydrogen

Keywords

  • A. Sintering
  • A. Sol-gel processes
  • B. Composites
  • C. Electrical properties

ASJC Scopus subject areas

  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

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title = "Influence of sintering temperature on the power density of samarium-doped-ceria carbonate electrolyte composites for low-temperature solid oxide fuel cells",
abstract = "The effects of sintering temperature on the current-voltage (I-V) performance of symmetrical cells with an SDCC electrolyte composite were evaluated in this study. The SDCC electrolyte composite was prepared by mixing 80 wt{\%} SDC with 20 wt{\%} Li and Na carbonate (Li/Na ratio of 2/1) via a solid state reaction method. The resultant SDCC electrolyte composite powder was uniaxially pressed into a circular pellet and sintered at 500 °C, 550 °C, 600 °C and 650 °C for 5 h. A symmetrical cell was finally fabricated by painting a conductive silver paste on both sides of the dense SDCC electrolyte composite pellet, and its I-V performance was measured using hydrogen and air as the fuel and oxidant, respectively. The phase structure and microstructure of the composite powders were investigated using an X-ray diffractometer, field emission scanning electron microscope, and transmission electron microscope. Ceramic pellets sintered at 550 °C exhibited a maximum power density of 63.3 mW/cm2 and an open circuit voltage of 1.14 V at an operating temperature of 650 °C. This study contributes to the development of SDCC electrolyte composite substrates for electrolyte-supported low-temperature SOFCs.",
keywords = "A. Sintering, A. Sol-gel processes, B. Composites, C. Electrical properties",
author = "{Muhammed Ali}, {S. A.} and Andanastuti Muchtar and Sulong, {Abu Bakar} and Norhamidi Muhamad and Edy Herianto",
year = "2013",
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doi = "10.1016/j.ceramint.2013.01.002",
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T1 - Influence of sintering temperature on the power density of samarium-doped-ceria carbonate electrolyte composites for low-temperature solid oxide fuel cells

AU - Muhammed Ali, S. A.

AU - Muchtar, Andanastuti

AU - Sulong, Abu Bakar

AU - Muhamad, Norhamidi

AU - Herianto, Edy

PY - 2013/7

Y1 - 2013/7

N2 - The effects of sintering temperature on the current-voltage (I-V) performance of symmetrical cells with an SDCC electrolyte composite were evaluated in this study. The SDCC electrolyte composite was prepared by mixing 80 wt% SDC with 20 wt% Li and Na carbonate (Li/Na ratio of 2/1) via a solid state reaction method. The resultant SDCC electrolyte composite powder was uniaxially pressed into a circular pellet and sintered at 500 °C, 550 °C, 600 °C and 650 °C for 5 h. A symmetrical cell was finally fabricated by painting a conductive silver paste on both sides of the dense SDCC electrolyte composite pellet, and its I-V performance was measured using hydrogen and air as the fuel and oxidant, respectively. The phase structure and microstructure of the composite powders were investigated using an X-ray diffractometer, field emission scanning electron microscope, and transmission electron microscope. Ceramic pellets sintered at 550 °C exhibited a maximum power density of 63.3 mW/cm2 and an open circuit voltage of 1.14 V at an operating temperature of 650 °C. This study contributes to the development of SDCC electrolyte composite substrates for electrolyte-supported low-temperature SOFCs.

AB - The effects of sintering temperature on the current-voltage (I-V) performance of symmetrical cells with an SDCC electrolyte composite were evaluated in this study. The SDCC electrolyte composite was prepared by mixing 80 wt% SDC with 20 wt% Li and Na carbonate (Li/Na ratio of 2/1) via a solid state reaction method. The resultant SDCC electrolyte composite powder was uniaxially pressed into a circular pellet and sintered at 500 °C, 550 °C, 600 °C and 650 °C for 5 h. A symmetrical cell was finally fabricated by painting a conductive silver paste on both sides of the dense SDCC electrolyte composite pellet, and its I-V performance was measured using hydrogen and air as the fuel and oxidant, respectively. The phase structure and microstructure of the composite powders were investigated using an X-ray diffractometer, field emission scanning electron microscope, and transmission electron microscope. Ceramic pellets sintered at 550 °C exhibited a maximum power density of 63.3 mW/cm2 and an open circuit voltage of 1.14 V at an operating temperature of 650 °C. This study contributes to the development of SDCC electrolyte composite substrates for electrolyte-supported low-temperature SOFCs.

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