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Synthesis of La1-xSrxGa1-yMgy-zMzO3−δ (M=Cr, Mn, Fe, Ni, Co) Electrolyte for IT-SOFCs by Laser Rapid Sintering

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Abstract:

A laser rapid sintering (LRS) method has been developed for the synthesis of La1-xSrxGa1-yMgy-zMzO3−δ (M=Cr, Mn, Fe, Ni, Co), an excellent electrolyte for solid oxide fuel cells. It is shown that pure perovskite La1-xSrxGa1-yMgy-zMzO3−δ phase can be produced within a few seconds with this method under optimized synthetic conditions. The samples prepared by laser rapid sintering give rise to unique ridge-like or spear-like microstructures which are orderly arranged and densely packed. It is found that the La0.9Sr0.1Ga0.8Mg0.2O3−δ and La0.8Sr0.2Ga0.83Mg0.085Co0.085O3−δ samples synthesized by LRS exhibit superior electrical properties to those samples for the same composition by solid state reaction (SSR) possibly due to their unique microstructure with relatively oriented and densely packed ridge-like or spear-like grains with large and regular sizes.

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Periodical:

Applied Mechanics and Materials (Volumes 672-674)

Pages:

691-695

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.672-674.691

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Online since:

October 2014

Authors:

Jie Zhang*, Li Jun Pan, Chao Yuan

Keywords:

Intermediate Temperature Solid Oxide Fuel Cells (IT-Sofcs), Laser Rapid Sintering (LRS), Relative Density, Solid State Reaction (SSR), Total Conductivity

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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