2-Dimensional Ion Conducting Bismuth Vanadates for Electrochemical Devices

用于电化学器件的二维离子导电钒酸铋

• 批准号: 198685931
• 负责人: Professor Dr.-Ing. Ralf Moos
• 金额: --
• 依托单位: Lehrstuhl für Funktionsmaterialien
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/198685931?language=en
• 关键词: Dimensional; Ion; Conducting; Bismuth; Vanadates

The scientific goal of this collaborative project is to develop a defect chemistry model and determine fundamental thermal/conduction/transport (tensor) properties for acceptor doped bismuth vanadate ceramic (BIMEVOX), a family of non-standard, bi-dimensional fast ion conductors. This involves a comprehensive synthesis, characterization, and testing plan, with key objectives: 1. Achieve the highest possible (near theoretical density) BIMEVOX ceramics via hot forging2. Achieve high crystallographic orientation in BIMEVOX ceramics via hot forging (bulk samples) and tape casting (thick films). 3. Characterize the (anisotropic) thermal conductivity and thermal expansion.4. Measure the (anisotropic) transport properties of BIMEVOX by impedance spectroscopy, polarization, and thermoelectric measurements as a function of temperature and pO2 5. Create defect chemical models (Kroger Vink), with verification from above measurements. A broad impact goal is the use of bulk and thick film BIMEVOX in electrochemical devices for operation in a temperature regime considered unusually low for ionic conductors (350°C to 500°C). BIMEVOX will be incorporated into novel devices such as direct thermoelectric and mixed potential gas sensors, de-NOx cells and single chamber fuel cells.

该合作项目的科学目标是开发缺陷化学模型，并确定受体掺杂钒酸铋陶瓷（BIMEVOX）的基本热/传导/输运（张量）特性，这是一种非标准的二维快速离子导体。这包括一个全面的综合、表征和测试计划，主要目标是：通过热锻造实现最高可能的（接近理论密度）BIMEVOX陶瓷。通过热锻（散装样品）和带铸造（厚膜）在BIMEVOX陶瓷中实现高结晶取向。3. 表征（各向异性）导热系数和热膨胀。通过阻抗谱、极化和热电测量测量BIMEVOX的（各向异性）输运特性，作为温度和po25的函数。创建缺陷化学模型（Kroger Vink），并根据上述测量结果进行验证。一个广泛的影响目标是在电化学装置中使用体积和厚膜BIMEVOX，用于在离子导体（350°C至500°C）被认为异常低的温度下工作。BIMEVOX将集成到新型设备中，如直接热电和混合电位气体传感器、脱氮氧化物电池和单室燃料电池。

项目成果

An Overview of the Aerosol Deposition Method: Process Fundamentals and New Trends in Materials Applications

• DOI: 10.4416/jcst2015-00018
• 发表时间: 2015-09-01
• 期刊: JOURNAL OF CERAMIC SCIENCE AND TECHNOLOGY
• 影响因子: 0.5
• 作者: Hanft, D.;Exner, J.;Moos, R.
• 通讯作者: Moos, R.

BICU(TI)VOX as a Low/Intermediate Temperature SOFC Electrolyte: Another Look

BICU(TI)VOX 作为低/中温 SOFC 电解质：另一种视角

• DOI: 10.1002/9781119234531.ch3
• 作者: P. Fuierer;K. Ring;J. Exner;R. Moos
• 通讯作者: R. Moos

Aerosol deposition of (Cu,Ti) substituted bismuth vanadate films

• DOI: 10.1016/j.tsf.2014.11.037
• 发表时间: 2014-12-31
• 期刊: THIN SOLID FILMS
• 影响因子: 2.1
• 作者: Exner, Joerg;Fuierer, Paul;Moos, Ralf
• 通讯作者: Moos, Ralf

Anisotropy and thermal stability of hot-forged BICUTIVOX oxygen ion conducting ceramics

热锻 BICUTIVOX 氧离子导电陶瓷的各向异性和热稳定性

• DOI: 10.1016/j.jeurceramsoc.2013.10.016
• 发表时间: 2014
• 期刊: Journal of The European Ceramic Society
• 影响因子: 5.7
• 作者: P. Fuierer;M. Maier;J. Exner;R. Moos
• 通讯作者: R. Moos