Abstract
One of the disadvantages of a ceria-based electrolyte is that it becomes a mixed conductor at anode conditions, which causes cell voltage loss and fuel efficiency loss due to internal shorting. Chemical and mechanical stability is another concern for long-term service. To lower manufacturing costs, efforts have been made to bring proven semiconductor manufacturing technology to Solid Oxide Fuel Cells (SOFCs). This study employed Tape casting of cermet substrates, Screen-printing of functional layers and Co-firing of cell components (TSC) to fabricate nickel (Ni)-cermet supported cells with mainly ceria-based thin electrolytes. Ni-Yttria-Stabilized Zirconia (YSZ) cermet supported cell with Samaria Doped Ceria (SDC) single layer electrolytes and YSZ+SDC bi-layer electrolytes were successfully developed for low-temperature performance characterization. The elemental distribution at the cell interface was mapped and the electrochemical performance of the cells was recorded. Many high-Zr-content micro-islands were found on the thin SDC surface. The influence of co-firing temperature and thin-film preparation methods on the Zr-islands' appearance was also investigated. Using in-situ sintered cathodes, high performance of the SDC cells was obtained. It was concluded that the bi-layer cells did show higher Open Circuit Voltage (OCV) values, with 1180 mW/cm{sup 2} at 650 degrees C, as well as good performance at
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Zhang, X;
Robertson, M;
Deces-Petit, C;
Xie, Y;
Hui, R;
Yick, S;
Styles, E;
Roller, J;
Kesler, O;
Qu, W;
Jankovic, J;
Tang, Z;
Perednis, D;
Maric, R;
Ghosh, D
[1]
- National Research Council of Canada, Vancouver, BC (Canada). Inst. for Fuel Cell Innovation
Citation Formats
Zhang, X, Robertson, M, Deces-Petit, C, Xie, Y, Hui, R, Yick, S, Styles, E, Roller, J, Kesler, O, Qu, W, Jankovic, J, Tang, Z, Perednis, D, Maric, R, and Ghosh, D.
Ni-YSZ cermet substrate supported thin SDC and YSZ+SDC bi-layer SOFCs.
Canada: N. p.,
2005.
Web.
Zhang, X, Robertson, M, Deces-Petit, C, Xie, Y, Hui, R, Yick, S, Styles, E, Roller, J, Kesler, O, Qu, W, Jankovic, J, Tang, Z, Perednis, D, Maric, R, & Ghosh, D.
Ni-YSZ cermet substrate supported thin SDC and YSZ+SDC bi-layer SOFCs.
Canada.
Zhang, X, Robertson, M, Deces-Petit, C, Xie, Y, Hui, R, Yick, S, Styles, E, Roller, J, Kesler, O, Qu, W, Jankovic, J, Tang, Z, Perednis, D, Maric, R, and Ghosh, D.
2005.
"Ni-YSZ cermet substrate supported thin SDC and YSZ+SDC bi-layer SOFCs."
Canada.
@misc{etde_20670426,
title = {Ni-YSZ cermet substrate supported thin SDC and YSZ+SDC bi-layer SOFCs}
author = {Zhang, X, Robertson, M, Deces-Petit, C, Xie, Y, Hui, R, Yick, S, Styles, E, Roller, J, Kesler, O, Qu, W, Jankovic, J, Tang, Z, Perednis, D, Maric, R, and Ghosh, D}
abstractNote = {One of the disadvantages of a ceria-based electrolyte is that it becomes a mixed conductor at anode conditions, which causes cell voltage loss and fuel efficiency loss due to internal shorting. Chemical and mechanical stability is another concern for long-term service. To lower manufacturing costs, efforts have been made to bring proven semiconductor manufacturing technology to Solid Oxide Fuel Cells (SOFCs). This study employed Tape casting of cermet substrates, Screen-printing of functional layers and Co-firing of cell components (TSC) to fabricate nickel (Ni)-cermet supported cells with mainly ceria-based thin electrolytes. Ni-Yttria-Stabilized Zirconia (YSZ) cermet supported cell with Samaria Doped Ceria (SDC) single layer electrolytes and YSZ+SDC bi-layer electrolytes were successfully developed for low-temperature performance characterization. The elemental distribution at the cell interface was mapped and the electrochemical performance of the cells was recorded. Many high-Zr-content micro-islands were found on the thin SDC surface. The influence of co-firing temperature and thin-film preparation methods on the Zr-islands' appearance was also investigated. Using in-situ sintered cathodes, high performance of the SDC cells was obtained. It was concluded that the bi-layer cells did show higher Open Circuit Voltage (OCV) values, with 1180 mW/cm{sup 2} at 650 degrees C, as well as good performance at 700-800 degrees C, with near OCV value. However, their performance was much lower than those of the SDC cells at low operating temperature. Zr-micro-islands formation on the SDC electrolyte was observed and investigated. 6 refs., 5 tabs., 7 figs.}
place = {Canada}
year = {2005}
month = {Jul}
}
title = {Ni-YSZ cermet substrate supported thin SDC and YSZ+SDC bi-layer SOFCs}
author = {Zhang, X, Robertson, M, Deces-Petit, C, Xie, Y, Hui, R, Yick, S, Styles, E, Roller, J, Kesler, O, Qu, W, Jankovic, J, Tang, Z, Perednis, D, Maric, R, and Ghosh, D}
abstractNote = {One of the disadvantages of a ceria-based electrolyte is that it becomes a mixed conductor at anode conditions, which causes cell voltage loss and fuel efficiency loss due to internal shorting. Chemical and mechanical stability is another concern for long-term service. To lower manufacturing costs, efforts have been made to bring proven semiconductor manufacturing technology to Solid Oxide Fuel Cells (SOFCs). This study employed Tape casting of cermet substrates, Screen-printing of functional layers and Co-firing of cell components (TSC) to fabricate nickel (Ni)-cermet supported cells with mainly ceria-based thin electrolytes. Ni-Yttria-Stabilized Zirconia (YSZ) cermet supported cell with Samaria Doped Ceria (SDC) single layer electrolytes and YSZ+SDC bi-layer electrolytes were successfully developed for low-temperature performance characterization. The elemental distribution at the cell interface was mapped and the electrochemical performance of the cells was recorded. Many high-Zr-content micro-islands were found on the thin SDC surface. The influence of co-firing temperature and thin-film preparation methods on the Zr-islands' appearance was also investigated. Using in-situ sintered cathodes, high performance of the SDC cells was obtained. It was concluded that the bi-layer cells did show higher Open Circuit Voltage (OCV) values, with 1180 mW/cm{sup 2} at 650 degrees C, as well as good performance at 700-800 degrees C, with near OCV value. However, their performance was much lower than those of the SDC cells at low operating temperature. Zr-micro-islands formation on the SDC electrolyte was observed and investigated. 6 refs., 5 tabs., 7 figs.}
place = {Canada}
year = {2005}
month = {Jul}
}