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A Study on Synthesis of $La_{x}Sr_{1-x}GaO_{3}$ Electrode Material for High Temperature Steam Electrolysis  

Park, Mi-Sun (Dept. of Chem. Eng. & Tech. Yeungnam Univ.)
Ryu, Si-Ok (Dept. of Chem. Eng. & Tech. Yeungnam Univ.)
Woo, Sang-Kook (Reaction & Separation Materials Research Center, Korea Institute of Energy Research)
Park, Young-Tae (Dept. of Display & Chem. Eng., Kyungil Univ.)
Choi, Ho-Sang (Dept. of Display & Chem. Eng., Kyungil Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.20, no.5, 2009 , pp. 432-438 More about this Journal
Abstract
In this paper, we synthesized LSG powder by Modified-GNP method. Lanthanum, strontium and gallium (LSG) were selected in the preparation of an oxygen-electrode (anode) for High Temperature Steam Electrolysis system (HTSE). The used amount and concentration of nitric acid were varied to find out an appropriate composition for oxygen-electrode (anode). In order to optimize the molar ratio of La and Sr, ratio of La to Sr was varied that 2:8, 5:5 and 8:2. The combined LSGs were calcined for 2 hours at $700^{\circ}C$ and were sintered in a furnace for 4 hours at $1200^{\circ}C$. The phase and crystallinity of LSG powder were determined by XRD. The surface morphology was observed through SEM photograph, and the specific surface area was investigated with BET. The thermochemical property was determined by TG/DTA. The synthesized preparation was obtained of $La_{0.8}Sr_{0.2}GaO_{3}$ formula for 3M nitric acid, which was the best perovskite phase.
Keywords
HTSE; Hydrogen; GNP(glycine-nitrate process); $LaSrGaO_3$; Perovskite($ABO_3$);
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Times Cited By KSCI : 1  (Citation Analysis)
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