La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ cathode surface-treated with La 2 NiO 4+δ by aerosol-assisted chemical vapor deposition for high performance solid oxide fuel cells

Dong Young Jang, Gwon Deok Han, Hyeon Rak Choi, Min Sik Kim, Hyung Jong Choi, Joon Hyung Shim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this study, we evaluate lanthanum strontium cobalt ferrite (LSCF) surface-coated with lanthanum nickelate (LNO) fabricated by aerosol-assisted chemical vapor deposition (AACVD) for application in solid oxide fuel cells (SOFCs). The AACVD method successfully produces LNO in the desired composition and crystal structure. The deposited LNO is confirmed to form a dense and uniform layer along the nano-porous LSCF support. The LSCF with an optimal amount of LNO surface clearly enhances the SOFC performance, showing a power increase of approximately 60% at 600 °C in our experiment. This enhancement results from the reduction of both ohmic and polarization resistance, presumably due to improved cathodic surface kinetics and current collection. This AACVD LNO-treatment is also confirmed to be effective in improving long-term stability, significantly suppressing the power decrease observed in an untreated sample.

Original languageEnglish
JournalCeramics International
DOIs
Publication statusPublished - 2019 Jan 1

Fingerprint

Lanthanum
Solid oxide fuel cells (SOFC)
Aerosols
Strontium
Chemical vapor deposition
Cathodes
Ferrite
Cobalt
Crystal structure
Polarization
Kinetics
Chemical analysis
cobalt ferrite
Experiments

Keywords

  • Aerosol-assisted chemical vapor deposition
  • Cathode
  • Lanthanum nickelate
  • Lanthanum strontium cobalt ferrite
  • Solid oxide fuel cells

ASJC Scopus subject areas

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

Cite this

La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ cathode surface-treated with La 2 NiO 4+δ by aerosol-assisted chemical vapor deposition for high performance solid oxide fuel cells . / Jang, Dong Young; Han, Gwon Deok; Choi, Hyeon Rak; Kim, Min Sik; Choi, Hyung Jong; Shim, Joon Hyung.

In: Ceramics International, 01.01.2019.

Research output: Contribution to journalArticle

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abstract = "In this study, we evaluate lanthanum strontium cobalt ferrite (LSCF) surface-coated with lanthanum nickelate (LNO) fabricated by aerosol-assisted chemical vapor deposition (AACVD) for application in solid oxide fuel cells (SOFCs). The AACVD method successfully produces LNO in the desired composition and crystal structure. The deposited LNO is confirmed to form a dense and uniform layer along the nano-porous LSCF support. The LSCF with an optimal amount of LNO surface clearly enhances the SOFC performance, showing a power increase of approximately 60{\%} at 600 °C in our experiment. This enhancement results from the reduction of both ohmic and polarization resistance, presumably due to improved cathodic surface kinetics and current collection. This AACVD LNO-treatment is also confirmed to be effective in improving long-term stability, significantly suppressing the power decrease observed in an untreated sample.",
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AU - Jang, Dong Young

AU - Han, Gwon Deok

AU - Choi, Hyeon Rak

AU - Kim, Min Sik

AU - Choi, Hyung Jong

AU - Shim, Joon Hyung

PY - 2019/1/1

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N2 - In this study, we evaluate lanthanum strontium cobalt ferrite (LSCF) surface-coated with lanthanum nickelate (LNO) fabricated by aerosol-assisted chemical vapor deposition (AACVD) for application in solid oxide fuel cells (SOFCs). The AACVD method successfully produces LNO in the desired composition and crystal structure. The deposited LNO is confirmed to form a dense and uniform layer along the nano-porous LSCF support. The LSCF with an optimal amount of LNO surface clearly enhances the SOFC performance, showing a power increase of approximately 60% at 600 °C in our experiment. This enhancement results from the reduction of both ohmic and polarization resistance, presumably due to improved cathodic surface kinetics and current collection. This AACVD LNO-treatment is also confirmed to be effective in improving long-term stability, significantly suppressing the power decrease observed in an untreated sample.

AB - In this study, we evaluate lanthanum strontium cobalt ferrite (LSCF) surface-coated with lanthanum nickelate (LNO) fabricated by aerosol-assisted chemical vapor deposition (AACVD) for application in solid oxide fuel cells (SOFCs). The AACVD method successfully produces LNO in the desired composition and crystal structure. The deposited LNO is confirmed to form a dense and uniform layer along the nano-porous LSCF support. The LSCF with an optimal amount of LNO surface clearly enhances the SOFC performance, showing a power increase of approximately 60% at 600 °C in our experiment. This enhancement results from the reduction of both ohmic and polarization resistance, presumably due to improved cathodic surface kinetics and current collection. This AACVD LNO-treatment is also confirmed to be effective in improving long-term stability, significantly suppressing the power decrease observed in an untreated sample.

KW - Aerosol-assisted chemical vapor deposition

KW - Cathode

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KW - Lanthanum strontium cobalt ferrite

KW - Solid oxide fuel cells

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