757357
Lanthanum gallate, strontium and magnesium doped
powder, 0.3-0.6 μm, 99% trace rare earth metals basis
Synonym(s):
Gallium lanthanum magnesium strontium oxide, LSGM, LSGM 8282, Lanthanum Strontium Gallate Magnesite, Strontium and Magnesium doped Lanthanum Gallate
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All Photos(3)
About This Item
Empirical Formula (Hill Notation):
La0.8Sr0.2Ga0.8Mg0.2O3
CAS Number:
Molecular Weight:
237.29
UNSPSC Code:
26111700
NACRES:
NA.23
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Quality Level
Assay
99% trace rare earth metals basis
form
powder
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Design for Energy Efficiency
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surface area
4-8 m2/g
particle size
0.3-0.6 μm
0.4-0.8 μm (d50)
mp
>400 °C
greener alternative category
General description
LSGM is an electrolyte material for intermediate temperature (below 800oC ) solid oxide fuel cells (IT-SOFC). LaGaO3 based pervoskite; doped with strontium and magnesium (LSGM) is known to exhibit high oxide ionic conductivity, on account of the high concentration and mobility of oxygen vacancies LSGM-8282 can be synthesized by solid state reaction between La2O3, MgO, SrCo3 and Ga2O at temperatures > 1000oC. Other known methods of producing LSGM are combustion synthesis, coprecipitation route, Pechini method for powder. Pechini method is popularly used in producing LSGM for solid oxide fuel cells (SOFCs).
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Application
World-wide a number of activities are concerned with the optimization and development of cell materials and microstructures with the aim of reducing the solid oxide fuel cell (SOFC) operating temperatures. Reducing operating temperatures not only increases the life time of SOFC but also reduces cost of the total system.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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Chemical Preparation of Pure and Strontium-and/or Magnesium-Doped Lanthanum Gallate Powders
Tas A, et al.
Journal of the American Ceramic Society. American Ceramic Society, 83(12), 2954-2960 (2000)
Oxygen surface exchange and diffusion in LaGaO 3 based perovskite type oxides.
Ishihara T, et al.
Solid State Ionics, 113, 593-600 (1998)
Huang, P-N.; et al.
Journal of the Electrochemical Society, 143, 1644-1644 (1996)
SOFC composite electrolyte based on LSGM-8282 and zirconia or doped zirconia from zircon concentrate
Rahmawati F, et al.
International Journal of Minerals, Metallurgy, and Materials, 19(9), 863-871 (2012)
Hwang, C-S.; et al.
Journal of Power Sources, 196, 1932-1932 (2011)
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