Formation of yttria-stabilized zirconia nanotubes by atomic layer deposition toward efficient solid electrolytes

Eunsoo Kim, Hyunchul Kim, Changdeuck Bae, Daehee Lee, Jooho Moon, Joosun Kim, Hyunjung Shin

Research output: Contribution to journalArticlepeer-review

Abstract

We describe a fabrication strategy for preparing yttria-stabilized zirconia nanotube (YSZ-NT) arrays embedded in porous alumina membranes by means of template-directed atomic layer deposition (ALD) technique. The individual YSZ-NTs have a high aspect-ratio of well over 120, about ~ 110 nm in diameter, and ~ 14 µm in length. Interfacing the tube arrays with porous Pt was also introduced on the basis of partial etching technique in order to construct Pt/YSZ-NTs/Pt membrane electrode assembly (MEA) structures. The resulting YSZ-NTs MEAs show a 7 mm in diameter with a roughness factor of ~ 2. Area specific resistance was measured up to 1.84 Ω cm2 at 400 °C using H2 as fuel.

Original languageEnglish
Article number31
JournalNano Convergence
Volume4
Issue number1
DOIs
Publication statusPublished - 2017 Dec

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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