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734624

Samarium-doped ceria

Name: Samarium-doped ceria
Brand: ALDRICH

<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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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

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

Sm_0.2Ce_0.8O_1.9

greener alternative product characteristics

Design for Energy Efficiency
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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.

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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