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Merck

734624

Samarium-doped ceria

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

Sinónimos:

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

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Fórmula empírica (notación de Hill):
CeO2
Peso molecular:
172.11
UNSPSC Code:
26111700
PubChem Substance ID:
329764915
NACRES:
NA.23
MDL number:
MFCD04974842

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Nombre del producto

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

SMILES string

[Sm].O=[Ce]=O

InChI key

AQGZISMLQKBRRO-UHFFFAOYSA-N

InChI

1S/Ce.2O.Sm

form

powder

contains

20 mol % samarium as dopant

composition

Sm0.2Ce0.8O1.9

greener alternative product characteristics

Design for Energy Efficiency
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sustainability

Greener Alternative Product

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

Quality Level

100

Categorías relacionadas

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.

Clase de almacenamiento

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificados de análisis (COA)

Lot/Batch Number
MKCQ9338
MKCP5542
MKCM1109
MKCH9579
MKCC9444

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AC impedance investigation of samarium-doped ceria."
Zhan Z, et al.
Journal of the Electrochemical Society, 148(5), A427-A432 (2001)
Intermediate-temperature electrochemical performance of a polycrystalline PrBaCo2O5+ δ cathode on samarium-doped ceria electrolyte.
Chen D, et al.
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