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Synthesis of LaSrXMg-Oxide with X=Ga, Fe, or Cr

Published online by Cambridge University Press:  11 February 2011

Cinar Oncel  and
Mehmet A. Gulgun
Cinar Oncel
Affiliation:
Sabanci University, FENS, Orhanli Tuzla, Istanbul 34956, Turkiye
Mehmet A. Gulgun
Affiliation:
Sabanci University, FENS, Orhanli Tuzla, Istanbul 34956, Turkiye
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Abstract

Strontium and magnesium doped lanthanum gallate (LSGM) is a promising electrolyte material for intermediate temperature range (650–800°C) solid oxide fuel cell (SOFC) applications. Formation of unwanted phases and Ga loss at high temperatures (1100–1500°C) during synthesis and under low oxygen partial pressures during operation are major hurdles that stand in LSGM's way of full utilization. Using a polymeric precursor synthesis method, the feasibility of producing SOFC electrolyte material LSGM is investigated. The method involves complexing each constituent metal ion by the carboxyl and/or hydroxyl group of the citric acid and/or polyvinyl alcohol (PVA) in aqueous solution. The facility of this method compared with the traditional solid state reaction method was shown by synthesis of single phase and pure LSXM (X= Fe, Cr) oxides at reasonable temperatures (800°C). The X-ray diffraction patterns of LSFM and LSCM are also reported here for the first time.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 756: Symposia EE/FF – Solid-State Ionics – Materials for Fuel Cells and Fuel Processors , 2002 , FF4.12
Copyright
Copyright © Materials Research Society 2003

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References

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