Design and fabrication of three-dimensional solid oxide fuel cells

Young-Hag Koh, Jong J. Sun, Won Young Choi, Hyoun E. Kim

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A novel design for a three-dimensional (3-D) solid oxide fuel cell (SOFC) along with its method of fabrication is reported. This structure utilizes two 3-D channels that are separated by unique anode/electrolyte/cathode walls that thereby increases the active volumetric surface areas of the electrodes used for the chemical reactions. To implement this structure, a graphite template having one 3-D interconnected channel is successively coated with anode (NiO-YSZ), electrolyte (YSZ), and cathode (LSM-YSZ) slurries, followed by heat-treatment at elevated temperatures. This produces an additional 3-D channel that has the NiO-YSZ layer as a replica of the graphite template, while preserving the pre-existing channel that has the LSM-YSZ layer. The thickness of the NiO-YSZ layer, which provides mechanical stability, is controlled by adjusting the number of dip-coating cycles. Using this approach, it is possible to fabricate a ∼10 mm cubic SOFC without any notable defects, as well as to control the microstructures of the NiO-YSZ/YSZ/LSM-YSZ walls.

Original languageEnglish
Pages (from-to)1023-1029
Number of pages7
JournalJournal of Power Sources
Volume161
Issue number2
DOIs
Publication statusPublished - 2006 Oct 27
Externally publishedYes

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Keywords

  • Ceramic dip-coating
  • CNC-machining
  • Solid oxide fuel cell
  • Three-dimensional

ASJC Scopus subject areas

  • Electrochemistry
  • Energy (miscellaneous)
  • Fuel Technology
  • Materials Chemistry

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