| Autor: |
Rumen I. Tomov, Ryan Duncan, Mariusz. Krauz, R. Vasant Kumar, Bartek A. Glowacki |
| Přispěvatelé: |
ERC |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
E3S Web of Conferences, Vol 10, p 00098 (2016) |
| ISSN: |
2267-1242 |
| Popis: |
peer-reviewed Inkjet printing fabrication and modification of electrodes and electrolytes of SOFCs were studied. Electromagnetic print-heads were utilized to reproducibly dispense droplets of inks at rates of several kHz on demand. Printing parameters including pressure, nozzle opening time and drop spreading were studied in order to optimize the inks jetting and delivery. Scanning electron microscopy revealed highly conformal similar to 6-10 mu m thick dense electrolyte layers routinely produced on cermet and metal porous supports. Open circuit voltages ranging from 0.95 to 1.01 V, and a maximum power density of similar to 180 mW.cm(-2) were measured at 750 degrees C on Ni-8YSZ/YSZ/LSM single cell 50x50 mm in size. The effect of anode and cathode microstructures on the electrochemical performance was investigated. Two - step fabrication of the electrodes using inkjet printing infiltration was implemented. In the first step the porous electrode scaffold was created printing suspension composite inks. During the second step inkjet printing infiltration was utilized for controllable loading of active elements and a formation of nano-grid decorations on the scaffolds radically reducing the activation polarization losses of both electrodes. Symmetrical cells of both types were characterized by impedance spectroscopy in order to reveal the relation between the microstructure and the electrochemical performance. PUBLISHED peer-reviewed |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
