Tailoring gadolinium-doped ceria-based solid oxide fuel cells to achieve 2Wcm-2 at 550 °c

Jin Goo Lee, Jeong Ho Park, Yong Gun Shul

Research output: Contribution to journalArticle

112 Citations (Scopus)

Abstract

Low-temperature operation is necessary for next-generation solid oxide fuel cells due to the wide variety of their applications. However, significant increases in the fuel cell losses appear in the low-temperature solid oxide fuel cells, which reduce the cell performance. To overcome this problem, here we report Gd0.1Ce0.9O1.95-based low-temperature solid oxide fuel cells with nanocomposite anode functional layers, thin electrolytes and core/shell fibrestructured Ba0.5Sr 0.5Co0.8Fe0.2O3δd-Gd 0.1Ce0.9O1.95 cathodes. In particular, the report describes the use of the advanced electrospinning and Pechini process in the preparation of the core/shell-fibre-structured cathodes. The fuel cells show a very high performance of 2Wcm-2 at 550 °C in hydrogen, and are stable for 300 h even under the high current density of 1Acm-2. Hence, the results suggest that stable and high-performance solid oxide fuel cells at low temperatures can be achieved by modifying the microstructures of solid oxide fuel cell components.

Original languageEnglish
Article number4045
JournalNature communications
Volume5
DOIs
Publication statusPublished - 2014 Jun 4

Fingerprint

Cerium compounds
Gadolinium
solid oxide fuel cells
gadolinium
Solid oxide fuel cells (SOFC)
Oxides
Electrodes
Temperature
fuel cells
Fuel cells
Cathodes
cathodes
Low temperature operations
Nanocomposites
Electrospinning
Cellular Structures
Electrolytes
high current
Hydrogen
nanocomposites

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

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abstract = "Low-temperature operation is necessary for next-generation solid oxide fuel cells due to the wide variety of their applications. However, significant increases in the fuel cell losses appear in the low-temperature solid oxide fuel cells, which reduce the cell performance. To overcome this problem, here we report Gd0.1Ce0.9O1.95-based low-temperature solid oxide fuel cells with nanocomposite anode functional layers, thin electrolytes and core/shell fibrestructured Ba0.5Sr 0.5Co0.8Fe0.2O3δd-Gd 0.1Ce0.9O1.95 cathodes. In particular, the report describes the use of the advanced electrospinning and Pechini process in the preparation of the core/shell-fibre-structured cathodes. The fuel cells show a very high performance of 2Wcm-2 at 550 °C in hydrogen, and are stable for 300 h even under the high current density of 1Acm-2. Hence, the results suggest that stable and high-performance solid oxide fuel cells at low temperatures can be achieved by modifying the microstructures of solid oxide fuel cell components.",
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Tailoring gadolinium-doped ceria-based solid oxide fuel cells to achieve 2Wcm-2 at 550 °c. / Lee, Jin Goo; Park, Jeong Ho; Shul, Yong Gun.

In: Nature communications, Vol. 5, 4045, 04.06.2014.

Research output: Contribution to journalArticle

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