New Intercalation Materials

新型插层材料

• 批准号: 9422667
• 负责人: M. Stanley Whittingham
• 金额: $ 31.17万
• 依托单位: SUNY at Binghamton
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-04-01 至 1999-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9422667&HistoricalAwards=false
• 关键词: New; Intercalation; Materials

9422667 Whittingham Previous research by this investigator has established that new oxide intercalation hosts can be readily synthesized using hydrothermal techniques, and that changing the acidity or the cations present in the reaction medium dramatically determines the crystalline structure formed. By appropriate choice of reaction medium it is proposed to form new structures containing large tunnels or channels, similar to those found in aluminosilicate zeolites, that will offer unique properties for the materials chemistry. The feasibility of this approach has been demonstrated for tungsten and molybdenum oxides. Major emphasis in this project will be placed on vanadium and manganese oxides, and on a new titanium phosphate. Because enhanced diffusion in such materials are expected, the diffusion/ionic mobility will be determined. The host materials also will be characterized for their ability to be intercalated by a variety of guest ions and molecules, and their chemical and physical properties will be determined using x-ray, electrochemical, and electrical measurements and the standard analytical techniques. %%% Zeolitic microporous materials have frameworks containing mostly the redox inactive elements aluminum and silicon. From a chemical point of view it would be highly desirable to have a framework containing, or built from, redox active species such as transition metals. In addition, for many electrochemical applications it would be preferable to work with oxides rather than sulfides because of their greater ease of handling, lower cost and for energy storage their greater electrochemical potential. The goal of this project is to synthesize transition metal oxide materials with open structures, that might have some of the properties and applications of the aluminosilicate zeolitic materials, have novel applications and be potentially electrochemically active.

小行星9422667 该研究人员先前的研究已经确定，新的氧化物插层主体可以使用水热技术容易地合成，并且改变反应介质中存在的酸性或阳离子显著地决定了形成的晶体结构。通过适当选择反应介质，提出了形成包含大隧道或通道的新结构，类似于在铝硅酸盐沸石中发现的那些，这将为材料化学提供独特的性质。这种方法的可行性已被证明为钨和钼的氧化物。该项目的主要重点将放在钒和锰的氧化物以及新的磷酸钛上。 由于预期在此类材料中的增强扩散，因此将确定扩散/离子迁移率。主体材料也将被表征为它们被各种客体离子和分子插入的能力，并且它们的化学和物理性质将使用X射线、电化学和电学测量以及标准分析技术来确定。 沸石微孔材料具有主要含有氧化还原非活性元素铝和硅的骨架。 从化学的观点来看，高度期望具有含有氧化还原活性物质如过渡金属或由氧化还原活性物质如过渡金属构建的骨架。此外，对于许多电化学应用，优选使用氧化物而不是硫化物，因为它们更易于处理，成本更低，并且对于能量储存，它们具有更大的电化学电势。该项目的目标是合成具有开放结构的过渡金属氧化物材料，其可能具有铝硅酸盐沸石材料的一些性质和应用，具有新颖的应用并且具有潜在的电化学活性。