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Asian Journal of Research in Chemistry
Year : 2015, Volume : 8, Issue : 6
First page : ( 389) Last page : ( 393)
Print ISSN : 0974-4169. Online ISSN : 0974-4150.
Article DOI : 10.5958/0974-4150.2015.00062.0

A Study on La0.6Sr0.4Co0.3Fe0.8O3 (LSCF) Cathode Material Prepared by Gel Combustion Method for IT-SOFCs: Spectroscopic, Electrochemical and Microstructural Analysis

Mani Raj1, Gautam Ravindra Kumar1, Banerjee Sushmita1, Srivastava Anoop K.2, Jaiswal Amita1, Chattopadhyaya M. C.1,*

1Fuel Cell and Environmental Chemistry Research Laboratory, Department of Chemistry, University of Allahabad, Allahabad-211002

2Division of Electronics Engineering, Chonbuk National University, Jeonju, Jeonbuk561–756, South Korea

*Corresponding Author E-mail: mcchattopadhyaya@gmail.com

Online published on 17 October, 2015.

Abstract

Perovskite oxides of La0.6Sr0.4Co0.3Fe0.8O3, (LSCF) were synthesized as a new cathode material for intermediate temperature-solid oxide fuel cell (IT-SOFC) by gel-combustion method. Nitrates of La, Sr, Co and Fe were used as precursor and citric acid as self combustion reaction matter. The as-prepared cathode material was characterized for BET surface area, X-rays diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermal analysis, and conductivity. Electrochemical impedance was measured at different temperatures by sintering the LSCF pellets at 900°C for 2 h. The conductivity measurement showed the highest value as 0.89 S cm−1 at 700°C. The result shows that the LSCF can efficiently work as an intermediate temperature cathode material for solid oxide fuel cells.

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Keywords

Cathode nanomaterials, IT-SOFC, Impedance, Thermal analysis, XRD.

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