Abstract
This study discusses the fabrication and electrochemical performance of micro-tubular solid oxide fuel cells (SOFCs) with an electrolyte consisting a single-grain-thick yttria stabilized zirconia (YSZ) layer. It is found that a uniform coating of an electrolyte slurry and controlled shrinkage of the supported tube leads to a dense, crack-free, single-grain-thick (less than 1 μm) electrolyte on a porous anode tube. The SOFC has a power density of 0.39Wcm-2 at an operating temperature as low as 600°C, with YSZ and nickel/YSZ for the electrolyte and anode, respectively. An examination is made of the effect of hydrogen fuel flow rate and shown that a higher flow rate leads to better cell performance. Hence a YSZ cell can be used for low-temperature SOFC systems below 600 °C, simply by optimizing the cell structure and operating conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 7825-7828 |
| Number of pages | 4 |
| Journal | Journal of Power Sources |
| Volume | 195 |
| Issue number | 23 |
| DOIs | |
| State | Published - 1 Dec 2010 |
| Externally published | Yes |
Bibliographical note
Funding Information:This work was supported by NEDO, as part of the Advanced Ceramic Reactor Project.
Keywords
- Anode
- Electrolyte
- Micro-tu bular
- Ni-yttria stabilized zirconia
- Solid oxide fuel cell
- Yttria stabilized zirconia
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering
