| DOI | Resolve DOI: https://doi.org/10.1016/j.jpowsour.2007.10.002 |
|---|
| Author | Search for: Wang, Zhenwei1; Search for: Berghaus, Jörg Oberste; Search for: Yick, Sing1; Search for: Decès-Petit, Cyrille1; Search for: Qu, Wei1; Search for: Hui, Rob1; Search for: Maric, Radenka1; Search for: Ghosh, Dave1 |
|---|
| Affiliation | - National Research Council of Canada. NRC Institute for Fuel Cell Innovation
|
|---|
| Format | Text, Article |
|---|
| Subject | solid oxide fuel cell; metal-supported; low-temperature; dynamic evaluation; plasma spray |
|---|
| Abstract | A metal-supported solid oxide fuel cell (SOFC) composed of a Ni–Ce0.8Sm0.2O2−δ (Ni–SDC) cermet anode and an SDC electrolyte was fabricated by suspension plasma spraying on a Hastelloy X substrate. The cathode, an Sm0.5Sr0.5CoO3 (SSCo)–SDC composite, was screen-printed and fired in situ. The dynamic behaviour of the cell was measured while subjected to complete fuel shutoff and rapid start-up cycles, as typically encountered in auxiliary power units (APU) applications. A promising performance – with a maximum power density (MPD) of 0.176 W cm−2 at 600 °C – was achieved using humidified hydrogen as fuel and air as the oxidant. The cell also showed excellent resistance to oxidation at 600 °C during fuel shutoff, with only a slight drop in performance after reintroduction of the fuel. The Cr and Mn species in the Hastelloy X alloy appeared to be preferentially oxidized while the oxidation of nickel in the metallic substrate was temporarily alleviated. In rapid start-up cycles with a heating rate of 60 °C min−1, noticeable performance deterioration took place in the first two thermal cycles, and then continued at a much slower rate in subsequent cycles. A postmortem analysis of the cell suggested that the degradation was mainly due to the mismatch of the thermal expansion coefficient across the cathode/electrolyte interface. |
|---|
| Publication date | 2008-01-21 |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| NPARC number | 8901218 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | 86705f5f-e456-499f-b849-9190a7eda41a |
|---|
| Record created | 2009-04-22 |
|---|
| Record modified | 2023-06-26 |
|---|
