Intergrowth Structures with Intrinsic Oxygen Vacancies: A New Class of Oxygen Ion Conductors

具有本征氧空位的共生结构：一类新型氧离子导体

• 批准号: 9200688
• 负责人: Hans-Conrad zur Loye
• 金额: $ 31万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-15 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9200688&HistoricalAwards=false
• 关键词: Intergrowth; Structures; Intrinsic; Oxygen; Vacancies

This research is concerned with the investigation of a new class of oxygen ion conductors having intrinsic oxygen ion vacancies. The materials consist of structures based on the Aurivillius phases that have their perovskitic region substituted with brownmillerite- like structures containing intrinsic oxygen vacancies. The materials will be characterized by complex impedance spectroscopy, x-ray diffraction, and differential thermal analysis. The proposed work will bead to the preparation of a new class of oxygen ion conductors, and will result in a better understanding of factors affecting the activation energy and the magnitude of the oxygen ion conductivity. These materials can become components of fuel cells or be utilized in air separation technologies.

本研究涉及一类新的 具有本征氧离子空位的氧离子导体。的 材料由基于Aurivillius相的结构组成 其钙钛矿区域被棕钙钛矿取代 类似于含有本征氧空位的结构。 的 材料将通过复阻抗谱来表征， X射线衍射和差热分析。 拟议 工作将集中于制备一类新的氧离子 导体，并将导致更好地了解因素 影响氧离子的活化能和大小 电导率 这些材料可以成为燃料电池的组件 或用于空气分离技术。