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Sigma-Aldrich

Cerium(IV) oxide-samarium doped

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<0.5 μm particle size, powder, contains 20 mol % samarium as dopant

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Synonym(s):
SDC-20, SDC, Samarium-doped ceria
Empirical Formula (Hill Notation):
CeO2
Molecular Weight:
172.11
MDL number:
MFCD04974842
UNSPSC Code:
26111700
PubChem Substance ID:
329764915
NACRES:
NA.23

form

powder

Quality Level

100

contains

20 mol % samarium as dopant

composition

Sm0.2Ce0.8O1.9

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surface area

10-14 m2/g

particle size

0.1-0.5 μm (d50)
<0.5 μm

bulk density

1.787 g/mL

greener alternative category

, Enabling

SMILES string

[Sm].O=[Ce]=O

InChI

1S/Ce.2O.Sm

InChI key

AQGZISMLQKBRRO-UHFFFAOYSA-N

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General description

Cerium(IV) oxide-samarium doped powder (20% mol samarium doped) (SDC-20) is an electrolytic material with a high oxygen ion conductivity. Samarium ion acts as an aliovalent cation that can be incorporated into the host lattice to increase the oxygen vacancy concentration and improve the oxide ion conduction in cerium oxide. It can be synthesized by reverse strike co-precipitation technique.
Samarium doped ceria may be used as an electrolyte in solid oxide fuel cells (SOFCs). Electrical conductivity as a function of temperature of doped ceria was investigated in a study. Relation of dopant type, oxygen vacancy ordering and ionic conductivity was investigated by transmission electron microscopy and electron energy loss spectroscopy.
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Application

Cerium(IV) oxide-samarium doped can be used in the fabrication of solid oxide fuel cells (SOFCs), which can further be used as environmentally-friendly sources of alternative energy.

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Samarium-doped ceria nanowires: novel synthesis and application in low-temperature solid oxide fuel Cells
Ma Y, et al.
Advanced Materials, 22(14), 1640-1644 (2010)
Effect of Gd (Sm) doping on properties of ceria electrolyte for solid oxide fuel cells,
Zha S, et al.
Journal of Power Sources, 115(1), 44-48 (2003)
Fabrication and electrochemical properties of epitaxial samarium-doped ceria films on SrTiO3-buffered MgO substrates
Sanna S, et al.
Advances in Functional Materials, 19(11), 1713-1719 (2009)
Oxygen vacancy ordering in heavily rare-earth-doped ceria.
Ou DR, et al.
Applied Physics Letters, 89(17) (2006)
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