The effect of an ultra-thin zirconia blocking layer on the performance of a 1-μm-thick gadolinia-doped ceria electrolyte solid-oxide fuel cell

Doo Hwan Myung, Jongill Hong, Kyungjoong Yoon, Byung Kook Kim, Hae Weon Lee, Jong Ho Lee, Ji Won Son

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Abstract

Ultra-thin (less than 200 nm) yttria-stabilized zirconia (YSZ) blocking layers are employed at the anode side of a 1-μm-thick gadolinia-doped ceria (GDC) thin-film electrolyte by pulsed laser deposition. Their effects on a GDC thin-film electrolyte solid-oxide fuel cell (TF-SOFC) are presented. Without blocking layers, the open cell voltage (OCV) of the GDC TF-SOFC is about 0.6 V. By inserting the blocking layer, the OCV increases to over 1 V. As a result, the maximum power density of the TF-SOFC increases from 377 mW cm -2 to over 1 W cm -2 at 600°C. The present study demonstrates the possibility of obtaining the critical performance at a low temperature regime using thin-film GDC electrolytes.

Original languageEnglish
Pages (from-to)91-96
Number of pages6
JournalJournal of Power Sources
Volume206
DOIs
Publication statusPublished - 2012 May 15

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All Science Journal Classification (ASJC) codes

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

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