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

13 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

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Copper oxides
Yttria stabilized zirconia
Solid oxide fuel cells (SOFC)
Electrolytes
Gadolinium
Cerium compounds
Oxygen vacancies
Ionic conductivity
Densification
Oxides
Sintering
Metals
Doping (additives)

All Science Journal Classification (ASJC) codes

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

Cite this

Lee, Jin Goo ; Jeon, Ok Sung ; Ryu, Kwang Hyun ; Park, Myeong Geun ; Min, Sung Hwan ; Hyun, Sang Hoon ; Shul, Yong-Gun. / Effects of 8 mol% yttria-stabilized zirconia with copper oxide on solid oxide fuel cell performance. In: Ceramics International. 2015 ; Vol. 41, No. 6. pp. 7982-7988.
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Effects of 8 mol% yttria-stabilized zirconia with copper oxide on solid oxide fuel cell performance. / Lee, Jin Goo; Jeon, Ok Sung; Ryu, Kwang Hyun; Park, Myeong Geun; Min, Sung Hwan; Hyun, Sang Hoon; Shul, Yong-Gun.

In: Ceramics International, Vol. 41, No. 6, 01.07.2015, p. 7982-7988.

Research output: Contribution to journalArticle

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