Nanostructured MIEC Bab>0.5b>Srb>0.5b>Cob>0.6b>Feb>0.4b>Ob>3鈭?span style='font-style: italic'>未b> (BSCF5564) cathode for IT-SOFC by nitric acid aided EDTA-citric acid complexing process (NECC)

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• 作者：Sanjeev V. Moharil ; Bhagyashree S. Nagrare ; ^{bhagi.nagarare@gmail.com} ; Shabana P.S. Shaikh
• 关键词：Mixed ionic electronic conductor ; Solid oxide fuel cell ; Ba0.5Sr0.5Co0.6Fe0.4O3&minus ; 未(BSCF5564) ; Scanning electron microscopy ; 4-Probe D.C. conductivity
• 刊名：International Journal of Hydrogen Energy
• 出版年：2012
• 期刊代码：42_03603199
• 类别：ch
• 出版时间：March, 2012
• 卷：37
• 期：6
• 页码：5208-5215
• 文件大小：661 K

摘要

Bab>0.5b>Srb>0.5b>Cob>0.6b>Feb>0.4b>Ob>3鈭?em>未b>(BSCF5564) was synthesized by nitric acid aided EDTA-citric acid complexing sol-gel method (NECC). Both, the phase formation temperature and time of BSCF5564 synthesized NECC were found to be low i.e. single perovskite phase formation temperature is 200聽掳C less as compared to the conventional method of synthesis. The orthorhombic perovskite structure has been formed after calcination at 800聽掳C for 5聽h. Scanning electron microscopy reveals the formation of porous material constituting nano-sized and irregularly shaped rod-like structure with particle size approximately ranges from 90 to 160聽nm. The total weight loss of the BSCF5564 sample comes out to be 6.6%, indicating that quadrivalence state Co⁴⁺ and Fe⁴⁺ in the sample have been completely reduced to the trivalent state Co³⁺ and Fe³⁺ due to thermal analysis. The value of Eb>ab> for BSCF5564 prepared by NECC was 0.2288聽eV. The electrical conductivity of BSCF5564 synthesized by NECC is observed to be steady at high temperature (above 700聽掳C).