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 journalArticlepeer-review

23 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

Bibliographical note

Funding Information:
This research was supported by the International Research & Development Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (Grant No. NRF-2014K1A3A1A47067412 ). The Brain Korea 21 Plus program ( 21A20131712520 ) is also acknowledged for their support..

Publisher Copyright:
© 2015 Published by Elsevier B.V.

Keywords

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

ASJC Scopus subject areas

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

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