Banerjee Ghosh, Koyel and Mukhopadhyay, Jayanta and Bysakh, Sandip and Basu, Rajendra Nath (2017) La0.54Sr0.4Fe0.2Co0.8O3-delta@Co0.01Ce0.79Gd0.2O2-delta functional cathode material for solid oxide fuel cell application. International Journal of Hydrogen Energy, 42 (4). pp. 2327-2337. ISSN 0360-3199

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A novel nanocomposite functional cathode material La0.54Sr0.40Fe0.20Co0.80O3-delta@Co0.01Ce0.79 Gd0.20O2-delta is synthesized by two-step autocombustion method for the use in solid oxide fuel cell in the temperature regime <= 800 degrees C. The calcined powder is characterized by XRD, UV-VIS, Raman spectroscopy and transmission electron microscopy for the evaluation of crystal structure, band gap, particle size and elemental distribution in support of such functional material. An interpenetrating network of LSFC surrounding the CoCGO phase is revealed by HAADF-STEM study. It exhibits high electrical conductivity (260 S cm(-1)) and low electrode polarization (0.05 Omega cm(2)) at 800 degrees C. Incorporating LSFC@CoCGO as cathode onto Ni-YSZ anode-supported cell using YSZ electrolyte and CoCGO as the buffer layer results high current density 2.88 A cm(-2) (at 0.7 V) at 800 degrees C and imparts excellent stability (<= 1%) at constant load of 0.5 A cm(-2) and 1 A cm(-2) upto 240 h. The stability of the performance is tried to correlate with the modified cathode materials. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Item Type: Article
Subjects: Electronics
Divisions: Fuel Cell and Battery
Depositing User: Bidhan Chaudhuri
Date Deposited: 24 Jan 2018 07:30
Last Modified: 03 Aug 2018 09:29

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