763756

氧化钇掺杂的氧化铈(IV)

nanopowder, yttria 20 mol %, <50 nm particle size (TEM), 99.9% trace metals basis

• 别名: 20YDC, YDC-20, YDC20, Cerium yttrium oxide, YDC, Yttria doped ceria, Yttrium doped ceria
• 经验公式（希尔记法）: CeO₂/Y₂O₃
• CAS号: 170033-03-1
• MDL编号: MFCD04039918
• UNSPSC代码: 26111700
• PubChem化学物质编号: 329767074
• NACRES: NA.23

属性

• 质量水平: 100
• 方案: 99.9% trace metals basis
• 表单: nanopowder
• 组成: yttria, 20 mol %
• 环保替代产品特性: Design for Energy Efficiency; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• 粒径: <50 nm (TEM)
• 环保替代产品分类: , Enabling
• SMILES字符串: O=[Ce]=O.O=[Y]O[Y]=O
• InChI: 1S/Ce.5O.2Y
• InChI key: XVLUKJGVKWVXMP-UHFFFAOYSA-N

说明

一般描述

8mol% Yttria doped ceria may be prepared by carbonate coprecipitation technique.[1][2] 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.[2]

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.[3][4][5]

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应用

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.

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.[3][4][5][6]

安全信息

• 储存分类代码: 11 - Combustible Solids
• WGK: WGK 3
• 闪点(°F): Not applicable
• 闪点(°C): Not applicable