基于石墨烯纳米片的新型电化学电容器电极材料的制备及其电化学电容性质

项目名称： 基于石墨烯纳米片的新型电化学电容器电极材料的制备及其电化学电容性质

项目编号： No.20873064

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 张校刚

作者单位： 南京航空航天大学

项目金额： 34万元

中文摘要： 本课题采用液相控制还原法由氧化石墨制备新型二维碳纳米结构材料-石墨烯纳米片，然后以这种纳米片为构筑单元，与钴铝双氢氧化物纳米片相结合，利用电泳沉积和逐层组装技术制备高性能的新型复合电极材料，深入研究制备方法、制备条件对电极材料的结构、组成以及比能量、比功率和循环寿命等的影响，阐明具有高导电性质的石墨烯纳米片在复合电极材料中的作用机制，为其在电化学电容器中的具体应用提供理论指导。

中文关键词： 电化学电容器；石墨烯纳米片；纳米结构；复合电极材料

英文摘要： The project proposed here will involve the investigation and explore of a new kind of high performance composite electrode materials for electrochemical capacitor based on the combination of novel two dimensional carbon nanostructure-graphene nanosheets with Co-Al layered double hydroxides (LDHs) nanosheets. Firstly, the graphene nanosheets will be prepared by controlled chemical reduction method in solution from commercially available graphite and graphite oxide. And then, the graphene nanosheets are designed as the building blocks to combine with Co-Al LDHs nanosheets by electrophoretic deposition (EPD) and layer-by-layer (LBL) assembled techniques, respectively. The influence of preparation method and conditions on the structure, constitution, specific energy density and cycle life of the composite electrodes will be investigated. The mechanism of graphene nanosheets with a large surface area, high conductivity in the composites will also be demonstrated. The completion of this project would lay the foundation for further utilizing the graphene nanosheets combined with other electrode materials in electrochemical capacitor.

英文关键词： Electrochemical capacitors;Graphene Nanosheets;Nanostructure;Composite Electrodes