Stability and performance of nano-structured cathodes prepared by impregnation methods
Solid oxide fuel cells (SOFCs) are devices that convert the chemical energy of a fuel directly into electricity by electrochemical reactions. Lanthanum strontium manganite (LSM) is a most commonly used cathodes of high-temperature SOFCs. Operating at intermediate or lower temperatures will...
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Final Year Project |
| Language: | English |
| Published: |
2010
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/10356/39816 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Solid oxide fuel cells (SOFCs) are devices that convert the chemical energy of a fuel directly
into electricity by electrochemical reactions. Lanthanum strontium manganite (LSM) is a
most commonly used cathodes of high-temperature SOFCs. Operating at intermediate or
lower temperatures will lead to a significant increase of the electrode polarization resistance
as a result of LSM low ionic conductivity and high activation energy. However, the
incorporation of nano gadolinia-doped ceria (GDC) particles via impregnation leads to
significant enhancement in the electrochemical performance of LSM at reduced temperatures,
because GDC has high ionic conductivity and surface exchange rate. On the other hand,
stability issue is also raised due to the easy growth of nano particles. |
|---|