The role of interstitial oxide and superoxide anions in ionic conductors

间隙氧化物和超氧阴离子在离子导体中的作用

• 批准号: DP150102863
• 负责人: Prof Brendan Kennedy
• 金额: $ 37.82万
• 依托单位: The University of Sydney
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP150102863
• 关键词: role; interstitial; oxide; superoxide; anions

This project seeks to understand how defects and local disorder can facilitate solid-state ionic conductivity in complex oxides. Particular attention will be paid to the under-explored mechanisms by which excess oxygen can be incorporated in these oxides, as opposed to the conventional scenario in which conduction occurs through vacant sites due to an oxygen deficiency. The project aims to characterise the target oxides at various length scales using advanced diffraction, spectroscopy and imaging methods, to obtain a holistic multi-scale picture of their structures. It is expected that this will reveal the structure-property relationships required to rationally design new and improved oxide-ion conductors for applications such as solid oxide fuel cells.

本项目旨在了解缺陷和局部无序如何促进复合氧化物中的固态离子导电性。将特别注意的是未充分探索的机制，过量的氧可以被纳入这些氧化物，而不是传统的情况下，其中发生的传导通过空位由于缺氧。该项目旨在使用先进的衍射，光谱和成像方法在不同的长度尺度上对目标氧化物进行表征，以获得其结构的整体多尺度图像。预计这将揭示合理设计新的和改进的氧化物离子导体，如固体氧化物燃料电池的应用所需的结构-性能关系。