可用于超级电容器的非金属掺杂石墨烯微球的可控制备及其形成机制

项目名称： 可用于超级电容器的非金属掺杂石墨烯微球的可控制备及其形成机制

项目编号： No.51342009

项目类型： 专项基金项目

立项/批准年度： 2014

项目学科： 无机非金属材料学科

项目作者： 王要兵

作者单位： 中国科学院福建物质结构研究所

项目金额： 40万元

中文摘要： 具有特定结构和功能的石墨烯材料是推动其在超级电容器中应用的关键，而其可控制备及形成机制是目前亟待解决的科学问题。本项目拟通过喷雾干燥和固相原位还原技术可控制备具有微纳结构的非金属掺杂石墨烯微球，采用TEM、SEM、XPS、拉曼光谱、红外光谱、电导率测试等手段对石墨烯微球的组成、结构、表面形貌进行表征；研究石墨烯在限域条件下固相原位还原成石墨烯片及其进一步自组装成具有微纳结构的石墨烯微球的形成机制；通过充放电测试、阻抗、循环伏安等方法研究石墨烯材料的结构、表面性质与其双电层储能性能之间的关系，深入探讨其界面电化学反应机制，从而为这类具有微纳结构的石墨烯微球材料在超级电容器中的应用奠定基础。本项目的创新点在于能够可控制备具有特定结构的非金属掺杂石墨烯微球粉体材料，并着重研究其形成机制。

中文关键词： 碳材料；石墨烯；纳米结构；超级电容器；

英文摘要： The graphene materials with specific structure and the preparation method are the key point to promote its application for supercapacitors as the electrode materials. Whereas, the formation mechanism of the graphene materials with specific structure is the urgent problem to be solved. The project intents to controllably prepare the non-metal doped graphene microspheres with micro-nano structure by spray drying and solid phase in situ reduction technology. The composition, structure, surface morphology of the graphene microsphere are characterized by TEM, SEM, XPS, Raman spectroscopy, infrared spectroscopy and conductivity testing. The solid phase in situ reduction process of the graphene sheets is investigated, and the self-assemble mechanism of the graphene microspheres with micro-nano structure is revealed. Furthermore, the effect of the structure, surface properties on the energy storage performance of the double electric layer is investigated, and the interface electrochemical reaction mechanism of the graphene materials is deeply studied. It laid the theoretical basis for applying such micro-nano graphene microspheres in the supercapacitors.The innovation of this project is that the non-metal doped graphene powder materials with specific structures can be controllably prepared, and its formation mechanism a

英文关键词： carbon materials；graphene；nanostructure；supercapacitor；