Katı Oksit Yakıt Hücreleri için Ce0.8Sm0.2O1.9 Esaslı Elektrolit Malzemelerinin Hazırlanmasında Değişik Aminoasit Yakma Ajanlarının Karşılaştırılması

Bu çalışmada katı oksit yakıt hücrelerinde elektrolit malzemesi olarak kullanılan Ce0.8Sm0.2O1.9 seramik yapılarının sentezlenmesinde değişik yakma ajanlarının etkisi incelenmiştir. Yakma ajanı olarak en ekonomik ve basit yapıdaki amino asitler olan glisin, alanin ve valin kullanılmıştır. Üç farklı yakıt durumu için adyabatik alev sıcaklıkları hesaplanmış, elde edilen tozların mikro yapıları TGA, XRD ve SEM ile karakterize edilmiştir. 800 ºC’de kalsine edilen ve 1400 ºC ’de sinterlenen pelletlenmiş örneklerin O2- iyon iletkenlikleri Elektrokimyasal İmpedans Spektroskopisi ile 800 ºC için ölçülmüş ve en üstün iletkenlik değeri yakma ajanı olarak Alanin kullanılması durumunda elde edilmiştir. Alanin yakıt durumu için iletkenlik üzerine mikro yapının etkisi detaylı olarak tartışılmış ve 360 ºC’de kalsine edilmiş 1400 ºC’de sinterlenmiş örnek ile 4.54x10-2 S.cm-1 iletkenlik değeri elde edilmiştir.

Anahtar Kelimeler:

Katı Oksit Yakıt Hücreleri, Seramik Elektrolit, Mikroyapı, Yakma Sentezi

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