Materials World Network: Nanometric Effects at Ultra-Small Crystallite Size: Investigation of Low-Temperature Protonic Conductivity in Dense Functional Oxide Ceramics

材料世界网络：超小微晶尺寸的纳米效应：致密功能氧化物陶瓷中低温质子电导率的研究

• 批准号: 44069723
• 负责人: Professor Dr. Manfred Martin
• 金额: --
• 依托单位: Lehrstuhl für Physikalische Chemie I
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/44069723?language=en
• 关键词: Materials; World; Network; Nanometric; Effects

Motivated by the recent unprecedented observations on YSZ, the aim of this research project is to fundamentally investigate and provide a better understanding of the low-temperature protonic conductivity and related phenomena in dense, functional oxide materials with ultra-small crystallite sizes, such as acceptor-doped zirconia and ceria. The research project is a collaborative effort between the Department of Chemical Engineering and Materials Science (Professors Z. A. Munir and S. Kim) at the University of California, Davis (UC Davis), and the Institute of Physical Chemistry (Professor M. Martin) at RWTH Aachen University, Germany. At UC Davis fundamental investigations will be carried out (a) on the synthesis of nanocrystalline oxides by means of the PECS method, (b) on the structural characterization of the samples, and (c) on the electrical characterization of the prepared materials. At RWTH Aachen state-of-the-art time of flight secondary ion mass spectrometry (ToF-SIMS) with a depth resolution below 1 nm will be used to investigate solubility and diffusion of protons (and deuterons) and diffusion of oxygen in nanocrystalline oxide samples prepared and characterized at UC Davis. Through the combined effort and the unique instrumentation on both sides (PECS and SIMS) we expect to provide an understanding of the fundamental proton and oxygen transport processes in dense, nanocrystalline oxides, as an example of the nanoscale effect in functional oxides.

受最近对YSZ前所未有的观察的启发，本研究项目的目的是从根本上研究并更好地了解具有超小晶粒尺寸的致密功能氧化物材料（如受主掺杂的氧化锆和二氧化铈）的低温质子导电性和相关现象。该研究项目是化学工程和材料科学系（教授Z。A. Munir和S. Kim）和物理化学研究所（M.马丁）在亚琛工业大学，德国。在加州大学戴维斯分校，将进行基础研究（a）通过佩奇方法合成纳米晶氧化物，（B）样品的结构表征，和（c）制备材料的电学表征。在RWTH亚琛，深度分辨率低于1 nm的最先进的飞行时间二次离子质谱（ToF-SIMS）将用于研究在加州大学戴维斯分校制备和表征的纳米晶氧化物样品中质子（和氘核）的溶解度和扩散以及氧的扩散。通过双方的共同努力和独特的仪器（佩奇和西姆斯），我们希望提供一个基本的质子和氧的传输过程中的致密，纳米晶氧化物的理解，作为功能氧化物的纳米效应的一个例子。