锂离子电池多孔硅负极材料的绿色制备

项目名称： 锂离子电池多孔硅负极材料的绿色制备

项目编号： No.21271140

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 包志豪

作者单位： 同济大学

项目金额： 75万元

中文摘要： 利用超低温（～500 C）镁热还原法大量绿色制备自支撑的、掺杂/非掺杂的多孔硅材料；探索和研究镁热反应所涉及的动力学过程；通过反应参数（如时间和温度）的调节来调控多孔硅材料的微结构；利用化学镀方法对多孔硅表面实现金属 （如镍和铜）包覆；研究该多孔硅材料的嵌/脱锂特性和性能退化机制，揭示多孔硅微结构、掺杂及其包覆层对材料电化学性能的影响规律，最终获得改善多孔硅负极材料的有效方法，为研制和开发高性能锂离子电池负极材料提供实验基础。

中文关键词： 镁热反应；绿色制备；锂离子电池；多孔硅；石墨烯

英文摘要： In this project, self-supporting, doped and undoped porous silicon in a large scale will be synthesized via a green chemical route, a low-temperature magnesiothermic reaction. The kinetics involved in the reaction will be explored. The microstructure of porous silicon will be tailored by controlling the reaction parameters(e.g., time, temperature). Surface of porous silicon will be further modified by metallic coatings(e. g., nickel, copper) through electroless plating. We will study the performance of above tailored porous silicon as anode materials for Li-ion battery, reveal the the mechanisms how its microstructure, doping and coating influence the electrochemical performance of porous silicon, and finally obtain ways to improve its performance. The project will provide experimental basis for research and development of high performance Li-ion battery anode materials.

英文关键词： magnesiothermic reaction；green synthesis；lithium ion battery；porous silicon；graphene