Electrochemical Intercalation of Oxide Superconductors and Mixed Metal Oxides with Perovskite and Related Structures

氧化物超导体和混合金属氧化物与钙钛矿及相关结构的电化学插层

• 批准号: 9408742
• 负责人: Allan Jacobson
• 金额: $ 27万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-07-15 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9408742&HistoricalAwards=false
• 关键词: Electrochemical; Intercalation; Oxide; Superconductors; Mixed

9408742 Jacobson Univ. of Houston Dr. Allan J. Jacobson, Chemistry Department, University of Houston, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program of the Chemistry Division and the Chemical Reaction Processes Program of the Chemical and Transport Systems Division, under the NSF/EPRI initiative on Electrochemical Synthesis, for the study of the electrochemical synthesis of highly oxidized mixed metal oxides via oxygen intercalation. Specific objectives are to advance the understanding of fundamental aspects of oxygen intercalation in oxides and to assess the use of intercalation chemistry for the synthesis and processing of new oxide materials. Preliminary results on an electrochemically reversible La-Ni-O phase will be extended to determine the detailed kinetics for oxygen intercalation. These investigations will then be continued on ternary copper oxides, where the physical properties will be correlated with precise electrochemical control of composition. Finally, the technique will be applied to a wide range of systems and electrolyte compositions to determine its generality. Chemical compounds which contain several metals and oxygen have a number of uses, including as electronic and superconducting materials, ceramics, and glasses. Often the properties of these solids depends upon their exact oxygen content, which is difficult to regulate using the methods which are presently available. In this project a new technique for introducing oxygen into a "mixed metal oxide" will be developed using an electrochemical method. This will permit the formation of very oxygen rich materials under quite mild conditions. It will also allow the oxygen content to be precisely controlled in order to tailor the properties of the oxide.

艾伦J.雅各布森博士，休斯顿大学化学系，由化学部门的无机、生物无机和有机金属化学项目和化学和运输系统部门的化学反应过程项目支持，在NSF/EPRI电化学合成倡议下，通过氧插层研究高度氧化混合金属氧化物的电化学合成。具体目标是促进对氧在氧化物中嵌入的基本方面的理解，并评估嵌入化学在新氧化物材料的合成和加工中的应用。电化学可逆的La-Ni-O相的初步结果将扩展到确定氧插层的详细动力学。这些研究将继续在三元氧化铜上进行，其中物理性质将与组成的精确电化学控制相关联。最后，该技术将应用于广泛的系统和电解质组合物，以确定其通用性。含有几种金属和氧的化合物有许多用途，包括用作电子和超导材料、陶瓷和玻璃。通常，这些固体的性质取决于它们确切的氧含量，这很难用目前可用的方法来调节。在这个项目中，将使用电化学方法开发一种将氧气引入“混合金属氧化物”的新技术。这将允许在相当温和的条件下形成非常富氧的物质。它还可以精确控制氧含量，以调整氧化物的性质。