SET Proceedings

2978-4387

Caravel Press

10.65582/set.2008.195

2008.195

Synthesis of La0.8Sr0.2MnO3 Nano-powders using Glycine-Nitrate Process for Anode of High Temperature Electrolysis

Choi

Ho Sang

choihs@kiu.ac.kr Ryu

Si Ok

soryu@ynu.ac.kr Kim

Hyun Jin

Hwang

Gab Jin

gjhwang@kier.re.kr Woo

Sang Kook

skwoo@kier.re.kr Department of Chemical Engineering, Kyungil University, Gyeongsan-si, Korea School of Display & Chemical Engineering, Yeungnam University, Gyeongsan-si, Korea Thermochemical Hydrogen Research Group, Korea Institute of Energy Research, Daejeon, Korea

24082008

7 1 978-1-995850-08-5 1411 1418

24 August 2008

2008

Lanthanum, strontium and manganese (LSM), as an oxygen-electrode (anode) material for high temperature electrolysis system (HTES), were synthesized by a modified-glycine nitrate process (GNP). The synthesis of LSM was carried out at three different conditions and the starting materials and solvent were also varied in this study. The ratio of La:Sr:Mn was fixed to 8:2:10 in the preparation. The ratio of LSM and glycine in the starting condition was 1:1. Based on the result of TG-DSC thermal analysis, the prepared LSM formula was calcined at 800℃ and then it was further sintered at 1200℃ to remove the organic residues from the material. Perovskite phase was observed and the secondary phases of Mn2O4 and La2O3 were detected in XRD measurement of the sintered powder. The microscopic structure of the powder was investigated by Scanning Electron Microscope (SEM) and a size of each agglomerated powder was larger than around 200 nm. The powder was sonicated in distilled water for the deglomeration and then the particle size distribution was confirmed by TEM. The average particle size of the powder was about 10 nm. Surface areas obtained from Brunauer-Emmett-Teller surface area measurement (BET) at three different conditions were 2.9796m²/g, 0.5272m²/g and 1.8870m²/g.

High Temperature Electrolysis System (HTES) Perovskite (ABO3) Anion Glycine-Nitrate Process (GNP)

24 to 27 August 2008

7th International Conference on Sustainable Energy Technologies

SET2008

Seoul, Korea

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