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      https://www.ias.ac.in/article/fulltext/boms/044/0115

    • Keywords

       

      NdCoO$_3$-based cathode; facile synthesis; physical and electrochemical studies; LT-SOFC.

    • Abstract

       

      The material characteristics study of nanocrystalline cathode from perovskite family for low temperature solid oxide fuel cell (LT-SOFC) application was reported in this study. The nanocrystalline perovskite with composition of Nd$_{0.90}$Sr$_{0.10}$Co$_{0.90}$Fe$_{0.10}$O$_{3–{\delta}}$ (NSCFO) was prepared using cost-effective, simple, room temperature chemical precipitation method. The phase characterization was studied using X-ray powder diffraction analysis, which shows single fluorite cubic phase structure, wherein nanocrystallinity is retained (crystallite size 17.5 nm). The metal oxide bond was confirmed by Fourier transform infrared characterization. The surface morphology was studied using scanning electron microscopy, which exhibits distorted cubic structure with agglomerations with size of about ${\sim}$300 nm, which coincides with particle size data. The elemental composition was confirmed by energy-dispersive X-ray microanalysis mapping. The electrical behaviour of NSCFO composition was studied and the Nyquist plot exhibits the conductivity of 1.37 9 10$^{–1}$ S cm$^{–1}$ at 600$^{\circ}$C with the activation energy of 0.355 eV. The acquired physical and electrochemical characterization results were scrutinized in order to use the materials as an efficient cathode in LT-SOFC.

    • Author Affiliations

       

      SRINIVASAN DHARANI PRIYA1 ARPUTHARAJ SAMSON NESARAJ1 ANBURAJ IMMANUEL SELVAKUMAR2

      1. Department of Applied Chemistry, Karunya Institute of Technology and Sciences (Deemed to be University), Coimbatore 641114, India
      2. Department of Electrical and Electronics Engineering, Karunya Institute of Technology and Sciences (Deemed to be University), Coimbatore 641114, India
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