Self-propagating room temperature synthesis of SDC20 oxide-ion conductor ceramics for solid oxide fuel cells
2nd International Eurasian Conference on Science, Engineering and Technology , Gaziantep, Türkiye, 7 - 09 Ekim 2020, ss.46-51, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Basıldığı Şehir: Gaziantep
- Basıldığı Ülke: Türkiye
- Sayfa Sayıları: ss.46-51
- İstanbul Üniversitesi-Cerrahpaşa Adresli: Hayır
Özet
In this work 20 mole% samaria-doped ceria (SDC20) powders was synthesized Self-Propagating Room Temperature (SPRT) synthesis technique. SPRT technique is based on room temperature mechano-chemical reaction between metal nitrates and sodium hydroxide, wherein the reaction is spontaneous and terminates extremely fast. Thanks to the applied mechanical energy, it is possible for the reaction to take place at room temperature and to observe the reaction with the naked eye. Accordingly, appropriate amount of chemicals were hand-mixed in agate mortar for 20 min until the mixture got light brown. After being exposed to air for 3 h, the mixture was suspended in water. Nano-structured SDC20 particles were taken by centrifugation. The synthesized powders were characterized by XRD, TGA, SEM. After characterization, all synthesized nano powders were pressed uniaxially and isostaticaly. Pelletized and sintered samples was characterized by SEM and electrochemical impedance spectroscopy (EIS) analysis.