Nano-granulization of gadolinia-doped ceria electrolyte surface by aerosol-assisted chemical vapor deposition for low-temperature solid oxide fuel cells

Jun Woo Kim, Dong Young Jang, Manjin Kim, Hyung Jong Choi, Joon Hyung Shim

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We have fabricated nano-scale gadolinia-doped ceria (GDC) at the electrode-electrolyte boundary by aerosol-assisted chemical vapor deposition (AACVD) for high-performance solid oxide fuel cells (SOFCs) working at low temperatures below 500 °C. In AACVD, temperature is the key factor affecting the grain size. We have confirmed that by nano-granulizing the electrolyte surface using optimized AACVD, the power output of the SOFC is 50% higher than that of the bare GDC SOFC. From the impedance analysis, significant enhancement of the cathodic oxygen reduction reaction is identified from the AACVD-GDC nano-grain surface treatment.

Original languageEnglish
Pages (from-to)72-77
Number of pages6
JournalJournal of Power Sources
Volume301
DOIs
Publication statusPublished - 2016 Jan 1

Fingerprint

Gadolinium
Cerium compounds
solid oxide fuel cells
gadolinium
Solid oxide fuel cells (SOFC)
Aerosols
Electrolytes
Chemical vapor deposition
aerosols
vapor deposition
electrolytes
Temperature
surface treatment
Surface treatment
grain size
impedance
Oxygen
Electrodes
electrodes
gadolinium oxide

Keywords

  • Aerosol-assisted chemical vapor deposition
  • Ceramic thin films
  • Gadolinia-doped ceria
  • Grain boundaries
  • Solid oxide fuel cells
  • Surface modification

ASJC Scopus subject areas

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

Cite this

Nano-granulization of gadolinia-doped ceria electrolyte surface by aerosol-assisted chemical vapor deposition for low-temperature solid oxide fuel cells. / Kim, Jun Woo; Jang, Dong Young; Kim, Manjin; Choi, Hyung Jong; Shim, Joon Hyung.

In: Journal of Power Sources, Vol. 301, 01.01.2016, p. 72-77.

Research output: Contribution to journalArticle

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