Effect of Sr2+ Addition on the Structural Properties of Ce0.8Gd0.2O2- δ (GDC) Electrolyte for Low Temperature Solid Oxide Fuel Cell Application | Chapter 4 | Current Research Progress in Physical Science Vol. 1

 

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