Electrochemical and microstructural characterization of polymeric resin-derived multilayered composite cathode for SOFC

Hwa Seob Song, Sang Hoon Hyun, Jooho Moon, Rak Hyun Song

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The multilayered cathodes of functionally graded microstructure for SOFCs were developed using a polymeric resin as a pore former at the nanometer scale. LSM-YSZ composite layer was placed on the interface between electrode/ electrolyte as a reaction active layer, subsequently LSM as an intermediate layer and LSCF as a current collector were deposited by screen printing. The type of the LSM-YSZ composite powders used in the cell fabrication influenced the microstructure of the catalytic bottom layer. Furthermore, the addition of the polymeric resin to the particulate paste permits us to produce a nanoporous electrode of high porosity and surface area after thermal decomposition and crystallization. The electrochemical cell of such a microstructural feature showed a significantly improved electrocatalytic activity toward the oxygen reduction. Microstructural evolution and its electrochemical performance of the electrochemical cells with multilayered cathodes were investigated by SEM and impedance spectroscopy.

Original languageEnglish
Pages (from-to)272-277
Number of pages6
JournalJournal of Power Sources
Volume145
Issue number2
DOIs
Publication statusPublished - 2005 Aug 18

Fingerprint

Electrochemical cells
Solid oxide fuel cells (SOFC)
resins
Cathodes
Resins
cathodes
Microstructure
Electrodes
composite materials
Screen printing
electrochemical cells
Microstructural evolution
Composite materials
Ointments
Crystallization
yttria-stabilized zirconia
Powders
Electrolytes
Pyrolysis
Porosity

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

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abstract = "The multilayered cathodes of functionally graded microstructure for SOFCs were developed using a polymeric resin as a pore former at the nanometer scale. LSM-YSZ composite layer was placed on the interface between electrode/ electrolyte as a reaction active layer, subsequently LSM as an intermediate layer and LSCF as a current collector were deposited by screen printing. The type of the LSM-YSZ composite powders used in the cell fabrication influenced the microstructure of the catalytic bottom layer. Furthermore, the addition of the polymeric resin to the particulate paste permits us to produce a nanoporous electrode of high porosity and surface area after thermal decomposition and crystallization. The electrochemical cell of such a microstructural feature showed a significantly improved electrocatalytic activity toward the oxygen reduction. Microstructural evolution and its electrochemical performance of the electrochemical cells with multilayered cathodes were investigated by SEM and impedance spectroscopy.",
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Electrochemical and microstructural characterization of polymeric resin-derived multilayered composite cathode for SOFC. / Song, Hwa Seob; Hyun, Sang Hoon; Moon, Jooho; Song, Rak Hyun.

In: Journal of Power Sources, Vol. 145, No. 2, 18.08.2005, p. 272-277.

Research output: Contribution to journalArticle

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