Microstructural Design of Thio-Sol-Gel Derived Titanium Disulfide Particles

硫代溶胶凝胶衍生的二硫化钛颗粒的微观结构设计

• 批准号: 9700343
• 负责人: Prashant Kumta
• 金额: $ 27.5万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-01 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9700343&HistoricalAwards=false
• 关键词: Microstructural; Design; Thio; Sol; Gel

The main objective of this proposal is better understanding of underlying atomic and molecular processes involved in the microstructural evolution of polycrytalline TiS2 and other powders synthesized using the thi-sol-gel process previously proposed by the P.I. A secondary objective is to investigate the electrochemical properties of the resulted thin layer, the influence of heat treatment and of charging on the particulate microstructure. The effects of particle size, shape, crystallite size, orientation and stoichiometry on the elctrochemical properties and the mechanisms involved in the evolution of the microstructure will be investigated using differential thermal and thermogravimetric analyses, scanning and transmission electron microscopy. If successful, the research may provide a method to synthesize an engineered microstructure with optimal electrochemical properties. Applications include electrochemical batteries. The preliminary test have indicated a dramatic increase of the number of charging cycles for a given reduction in performance.

该提案的主要目的是更好地理解与P.I.先前提出的Thi-Sol-Gel过程合成的多晶Tis2微结构演化和其他粉末所涉及的基本原子和分子过程。 次要目标是研究所得薄层的电化学特性，热处理和充电对颗粒微观结构的影响。 粒径，形状，结晶石大小，方向和化学计量对大都观特性的影响以及微观结构演化所涉及的机制将使用差分热和热重分析，扫描和透射显微镜进行研究。 如果成功，该研究可能会提供一种具有最佳电化学特性的工程微结构的方法。 应用包括电化学电池。 初步测试表明，给定性能降低的充电周期数量急剧增加。