Effects of 8 mol% yttria-stabilized zirconia with copper oxide on solid oxide fuel cell performance

Jin Goo Lee, Ok Sung Jeon, Kwang Hyun Ryu, Myeong Geun Park, Sung Hwan Min, Sang Hoon Hyun, Yong Gun Shul

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Solid oxide fuel cells (SOFCs) have advanced rapidly for the last decades. Since 8 mol% yttria-stabilized zirconia (8YSZ) has been considered the most conventional material for SOFC electrolyte, a number of studies have been focused on improving 8YSZ performance by changing dopants or adding a trace of metal oxide. In this study, the effect of a trace of CuO (100 ppm) on the performance of 8YSZ-based SOFCs is investigated. It is found that addition of a trace of CuO not only promotes a densification of the YSZ electrolyte by acting as a sintering aid but also increases the amount of the oxygen vacancy in the YSZ electrolyte. The ionic conductivities are about 0.0173 S cm-1 and 0.0196 S cm-1 in pristine and CuO (100 ppm)-YSZ electrolyte, respectively. The cell performance is about 0.5103 W cm-2 at 800 °C, which is about 1.5 times higher than the cell based on the pure YSZ electrolyte. The gadolinium-doped ceria (GDC)/8YSZ bilayer cell test also shows similar improvement to the single YSZ cell tests. Thus, the introduction of a trace of Cu (100 ppm) to the 8YSZ can be promising for a solid oxide fuel cell electrolyte.

Original languageEnglish
Pages (from-to)7982-7988
Number of pages7
JournalCeramics International
Volume41
Issue number6
DOIs
Publication statusPublished - 2015 Jul 1

Bibliographical note

Funding Information:
This work was supported by Technology Innovation Program ( 10037616 ) funded by the Ministry of Knowledge Economy (MKE, Korea).

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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