Unravelling the structural rules of antiperovskites and their derivatives

揭示反钙钛矿及其衍生物的结构规则

• 批准号: 22H01777
• 负责人: タッセル セドリック
• 金额: $ 11.23万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-04-01 至 2027-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22H01777/
• 关键词: 逆ペロブスカイト; 高圧合成; Perovskite; Antiperovskite; Polyanion; High pressure; New materials; Antiperovskites; Ionic conductivity

In the past fiscal year, we have discovered several new antiperovskites by means of high pressure and high temperature synthesis. The role of composition on the structure of the antiperovskites has been evaluated for different compositions. We have published the structure and properties of Na3H(ZnH4), which presents a highly distorted structure.From this new structure, different anions and polyanions have been incorporated in the antiperovskite framework. The new crystal structures have been determined using synchrotron and neutron powder diffraction. The origin of the distortions of our materials as well as the mechanism for ionic migration have been studied by Prof. Kuwabara. The ionic conductivity of our materials has been investigated in collaboration with Prof. Miyahara.

在过去的财年中，我们通过高压高温合成的方式发现了几种新的反钙钛矿。已经针对不同的组合物评估了组合物对反钙钛矿结构的作用。我们发表了Na3H(ZnH4)的结构和性质，它呈现出高度扭曲的结构。从这种新结构中，不同的阴离子和聚阴离子已被纳入反钙钛矿框架中。新的晶体结构已使用同步加速器和中子粉末衍射确定。 Kuwabara 教授研究了我们材料变形的根源以及离子迁移的机制。我们与宫原教授合作研究了我们材料的离子电导率。