Preparation and characterization of lscf-cuo using solid state method as cathode material for intermediate temperature solid oxide fuel cell (IT-SOFC)
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Date
2018-06
Authors
Muhammad Nur Ramadhan Abd Razak
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Abstract
Solid oxide fuel cells (SOFC) is one of the most widely used groups of fuel cell in
engineering products which converts the chemical energy directly to electrical energy and
thermal energy by using electrochemical reactions. IT-SOFC is a type of fuel cell which is
operated at intermediate temperature between 600 – 800ºC give a better electrochemical
performance and reduce the material and operating cost. LaSrCoFeO3 (LSCF) is a perovskite
cathode material commonly used in intermediate temperature solid oxide fuel cell (IT SOFC) which give the better electrochemical performance as compared with the classical
SOFC. This research investigated the chemical, physical and electrochemical characteristic
of LSCF composite with CuO which synthesized by conventional solid-state method. The
calcined powders were analyzed by X-ray diffraction analysis (XRD), scanning electron
microscopy (SEM), energy dispersive X-ray analysis (EDX), thermogravimetric analysis
(TGA) and Brunauer- Emmett- Teller analysis (BET). XRD data showed the single-phase
perovskite LSCF-CuO at temperature 700ºC. SEM images showed the LSCF-CuO particle
size increased as the calcination temperature increased. The BET showed the specific
surface area and total pores volume decreased as the calcination temperature increased. The
lowest polarization resistance (Rp) value for LSCF-CuO cathode was 0.41 Ω.cm2 at
temperature 800ºC.