| Title | Fabrication and properties of Ce0.8Gd0.2O1.9 electrolyte-based tubular solid oxide fuel cells |
| Publication Type | Journal Article |
| Year of Publication | 1999 |
| Authors | Hatchwell, C., Sammes N.M., and Brown I.W.M. |
| Journal | Solid State Ionics |
| Volume | 126 |
| Issue | 3 |
| Pagination | 201 - 208 |
| Date Published | 1999 |
| ISSN | 01672738 (ISSN) |
| Keywords | Binders, Ceria, Cerium compounds, Commercial water based binder system, Current density, Electric potential, Electrodes, Extrusion, Fuel cells, Heat treatment, Solid electrolytes, Solid oxide fuel cells, Surfaces, Tubular electrolytes |
| Abstract | A general procedure for the extrusion of Ce0.8Gd0.2O1.9 tubular electrolytes is detailed. Using a commercial water-based binder system, Ce0.8Gd0.2O1.9 was extruded, then fired at 1600°C to form high-density electrolyte tubes (98% relative to theoretical). Heat-treatment of the Ce0.8Gd0.2O1.9 powder at 900°C for 4 h yielded tubes that were highly dense with a smooth surface finish, while non heat-treated powders resulted in an extrusion that was less dense with poor surface finish. Electrodes were applied and the tubular SOFC was electrically tested. A good open circuit voltage of 0.911 V was achieved for the cell, however a poor operating current density of 0.0123 A/cm2 at 0.7 V was obtained. The results demonstrate the potential of fabricating and operating tubular SOFCs. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-0033357771&partnerID=40&md5=948629060e26e32962c83d74eaf618f5 |
| DOI | 10.1016/S0167-2738(99)00232-5 |
