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Sigma-Aldrich

Cerium(IV) oxide-gadolinium doped

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nanopowder, contains 10 mol % gadolinium as dopant

Synonym(s):

Gadolinium doped ceria

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About This Item

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

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form

nanopowder

Quality Level

contains

10 mol % gadolinium as dopant

composition

Ce0.9Gd0.1O2

reaction suitability

reagent type: catalyst
core: cerium

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surface area

>100 m2/g

particle size

5-10 nm (crystallite size)
<500 nm (secondary)

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General description

Cerium(IV) oxide-gadolinium doped nanopowder (10 mol% gadolinium doped) is an electrolytic material with high oxygen-ion conductivity, which operates at low temperatures. It can be prepared by a variety of methods such as sol-gel, wet chemical process, co-precipitation, hydrothermal and other combustion routes.[1][2]
Gadolinium doped ceria may be prepared by cation complexation sol-gel technique. XRD, specific surface area, morphology has been described in a study.[2] Higher oxygen ion conductivity of GDC over zirconia-based materials makes it a preferable choice for some components of SOFCs.[3]
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Application

Gadolinium doped ceria (GDC) may be used as an intermediate temperature electrolyte for solid oxide fuel cells (SOFCs) at elevated temperatures.[4][2]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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    Chemically-induced stresses in gadolinium-doped ceria solid oxide fuel cell electrolytes
    Atkinson A, et al.
    Solid State Ionics, 95(3-4), 249-258 null
    Microstructure and Grain-Boundary Effect on Electrical Properties of Gadolinium-Doped Ceria.
    Zhou XD, et al.
    Journal of the American Ceramic Society. American Ceramic Society, 85(7), 1757-1762 (2002)
    Thermal expansion of Gd-doped ceria and reduced ceria.
    Hayashi H, et al.
    Solid State Ionics, 132(3), 227-233 (2000)
    Synthesis and properties of Gadolinium-doped ceria solid solutions for IT-SOFC electrolytes
    Fuentes RO and Baker RT
    International Journal of Hydrogen Energy, 33(13), 3480-3484 (2008)

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