Ceria-based materials have found potential application as
electrolyte materials for the intermediate temperature (500-750°C) solid oxide
fuel cell application (IT-SOFC). Among several trivalent rare earth substituted
ceria electrolytes, Ce1-xGdxO2-δ(CGO) and Ce1-x SmxO2-δ (SDC) exhibit conductivity
exceeding that of YSZ at 1073 K (>0.1 S cm-1). This paper reports the effect
of Sr2+ addition on the structural, and microstructural properties of
Ce0.8Gd0.2O2-(GDC) electrolyte for low-temperature solid oxide fuel cell
application. The Sr2+ (0, 0.5, 1 and 2 mol %) doped GDC solid electrolytes were
prepared by solid-state method. The synthesized pellets were characterized
using X-ray diffraction, Scanning Electron Microscopy and Raman Spectroscopy.
The sintered densities of the samples are around 95%. XRD study reveals the
cubic fluorite structure. The XRD study reveals cubic structure lattice
parameters as well as crystallite size increase with increasing Sr2+ content.
The microstructure of the samples resulted in grain sizes in the range of 4.3
to 0.868 m. Raman spectra also confirm the presence of a GDC single phase.
Author(s)details:-
Koteswararao
P.
Department of Physics, ACE Engineering College, Ghatkesar, Hyderabad,
Telangana, India.
M. Buchi
Suresh
Center for Ceramic Processing, International Advanced Research Centre for
Powder Metallurgy and New Materials (ARCI), Hyderabad-500005, AP, India.
B. N. Wani
Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai,
India.
P. V.
Bhaskara Rao
Department of Physics, St. Mary’s Engineering College, Deshmukhi, R.R
(DT), India.
L. D.
Jadhav
Department of Physics, Rajaram College, Kolhapur, India.
Please See
the book here :- https://doi.org/10.9734/bpi/crpps/v1/8396E
