763756
Yttrium-doped ceria
nanopowder, yttria 20 mol %, <50 nm particle size (TEM), 99.9% trace metals basis
别名:
20YDC, Cerium(IV) oxide-yttria doped, YDC-20, YDC20, Cerium yttrium oxide, YDC, Yttria doped ceria, Yttrium doped ceria
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关于此项目
经验公式（希尔记法）:
CeO2/Y2O3
化学文摘社编号:
UNSPSC Code:
26111700
PubChem Substance ID:
NACRES:
NA.23
MDL number:
产品名称
氧化钇掺杂的氧化铈(IV), nanopowder, yttria 20 mol %, <50 nm particle size (TEM), 99.9% trace metals basis
Quality Segment
assay
99.9% trace metals basis
form
nanopowder
composition
yttria, 20 mol %
reaction suitability
core: cerium
greener alternative product characteristics
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product
particle size
<50 nm (TEM)
application(s)
catalysts
glass & ceramic
hydrogen and fuel cell
greener alternative category
, Enabling
SMILES string
O=[Ce]=O.O=[Y]O[Y]=O
InChI
1S/Ce.5O.2Y
InChI key
XVLUKJGVKWVXMP-UHFFFAOYSA-N
General description
8mol% Yttria doped ceria may be prepared by carbonate coprecipitation technique. Yttria doped ceria exhibits high ionic conductivity, low activation energy and small grain boundary resistance. The effect of microstructure on the electrolytic properties was investigated in detail.
Cerium(IV) oxide-yttria doped (YDC-20) is an electrolytic material that is used as an alternative to zirconia-based electrolytes. Its properties include high ionic conductivity (0.01 S cm−1), electronic conductivity (3 S cm−1), enhanced electrode reactions, and high oxygen surface exchange coefficient.
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Application
YDC-20 can be used as an electrolyte in the fabrication of solid oxide fuel cells (SOFCs). A thin film of YDC-20 (~17.5 nm) effectively reduces the cathode/interfacial energy by 0.1 eV and increases the exchange current density by a factor of 4. It can be operated with a temperature range of 300° - 500°C.
They are promising ceramic electrolytes for solid oxide fuel cells operating at low temperatures of 500-700°C (IT-SOFC). Doped ceria interlayers in between bulk yttria-stabilized zirconia electrolyte further enhance the performance of SOFCs.
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存储类别
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable