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734624

Samarium-doped ceria

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

Synonym(s):

Cerium samarium oxide, Cerium(IV) oxide-samarium doped, SDC-20, Samarium-doped cerium oxide, SDC, Samarium-doped ceria

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10 G

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About This Item

Empirical Formula (Hill Notation):
CeO2
Molecular Weight:
172.11
MDL number:
MFCD04974842
UNSPSC Code:
26111700
PubChem Substance ID:
329764915
NACRES:
NA.23

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Product Name

Cerium(IV) oxide-samarium doped, <0.5 μm particle size, powder, contains 20 mol % samarium as dopant

form

powder

Quality Level

100

contains

20 mol % samarium as dopant

composition

Sm0.2Ce0.8O1.9

greener alternative product characteristics

Design for Energy Efficiency
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sustainability

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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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This Item
572357544841700290
Cerium(IV) oxide-samarium doped &lt;0.5&#160;&#956;m particle size, powder, contains 20&#160;mol % samarium as dopant

Sigma-Aldrich

734624

Cerium(IV) oxide-samarium doped

Cerium(IV) oxide-gadolinium doped nanopowder, contains 20&#160;mol % gadolinium as dopant

Sigma-Aldrich

572357

Cerium(IV) oxide-gadolinium doped

Cerium(IV) oxide nanopowder, &lt;25&#160;nm particle size (BET)

Sigma-Aldrich

544841

Cerium(IV) oxide

Cerium(IV) oxide nanopowder, &lt;50&#160;nm particle size (BET), 99.95% trace rare earth metals basis

Sigma-Aldrich

700290

Cerium(IV) oxide

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

form

powder

form

nanopowder

form

nanopowder

form

nanopowder

contains

20 mol % samarium as dopant

contains

20 mol % gadolinium as dopant

contains

-

contains

-

composition

Sm0.2Ce0.8O1.9

composition

Ce0.8Gd0.2O2

composition

-

composition

-

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

sustainability

Greener Alternative Product

sustainability

Greener Alternative Product

sustainability

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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.[1][2]
Samarium doped ceria may be used as an electrolyte in solid oxide fuel cells (SOFCs).[1][3] Electrical conductivity as a function of temperature of doped ceria was investigated in a study.[2] Relation of dopant type, oxygen vacancy ordering and ionic conductivity was investigated by transmission electron microscopy and electron energy loss spectroscopy.[4]
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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.[5][6]

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCZ5312
MKCW1829
MKCV1074
MKCT4714
MKCV3029

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Physical chemistry chemical physics : PCCP, 11(38), 8580-8585 (2009-09-24)
We report a correlation between oxygen ionic conductivity and the enthalpy of formation of trivalent-doped ceria from the component binary oxides observed at relatively low temperatures (150-275 degrees C). The bulk conductivities of La-doped ceria samples identical to those previously
Oxygen vacancy ordering in heavily rare-earth-doped ceria.
Ou DR, et al.
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