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 language | English |
|---|---|
| Pages (from-to) | 7982-7988 |
| Number of pages | 7 |
| Journal | Ceramics International |
| Volume | 41 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2015 Jul 1 |
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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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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 journal › Article
TY - JOUR
T1 - Effects of 8 mol% yttria-stabilized zirconia with copper oxide on solid oxide fuel cell performance
AU - Lee, Jin Goo
AU - Jeon, Ok Sung
AU - Ryu, Kwang Hyun
AU - Park, Myeong Geun
AU - Min, Sung Hwan
AU - Hyun, Sang Hoon
AU - Shul, Yong-Gun
PY - 2015/7/1
Y1 - 2015/7/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.ceramint.2015.02.144
DO - 10.1016/j.ceramint.2015.02.144
M3 - Article
AN - SCOPUS:84927576415
VL - 41
SP - 7982
EP - 7988
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 6
ER -