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

doi:10.1016/j.ceramint.2019.03.162

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 journal › Article › peer-review

13 Citations (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 language	English
Pages (from-to)	12366-12371
Number of pages	6
Journal	Ceramics International
Volume	45
Issue number	9
DOIs	https://doi.org/10.1016/j.ceramint.2019.03.162
Publication status	Published - 2019 Jun 15

Bibliographical note

Funding Information:
This work was supported by the Technology Development Program to Solve Climate Changes of the National Research Foundation (NRF), funded by the Ministry of Science, ICT & Future Planning [grant number NRF-2017M1A2A2044933] . This work was also supported by the Korea Ministry of Environment (MOE) as “Public Technology Program based on Environmental Policy” [grant number E416-00070-0604-0 ].

Publisher Copyright:
© 2019

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

Access to Document

10.1016/j.ceramint.2019.03.162

Cite this

Jang, D. Y., Han, G. D., Choi, H. R., Kim, M. S., Choi, H. J., & Shim, J. H. (2019). 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 Ceramics International, 45(9), 12366-12371. https://doi.org/10.1016/j.ceramint.2019.03.162

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 et al.
In: Ceramics International, Vol. 45, No. 9, 15.06.2019, p. 12366-12371.

Research output: Contribution to journal › Article › peer-review

Jang, DY, Han, GD, Choi, HR, Kim, MS, Choi, HJ & Shim, JH 2019, ' 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 ', Ceramics International, vol. 45, no. 9, pp. 12366-12371. https://doi.org/10.1016/j.ceramint.2019.03.162

Jang DY, Han GD, Choi HR, Kim MS, Choi HJ, Shim JH. 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 Ceramics International. 2019 Jun 15;45(9):12366-12371. doi: 10.1016/j.ceramint.2019.03.162

Jang, Dong Young ; Han, Gwon Deok ; Choi, Hyeon Rak et al. / 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 In: Ceramics International. 2019 ; Vol. 45, No. 9. pp. 12366-12371.

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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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