新型嵌入式石墨烯纳米带/有序介孔碳复合电极材料的可控构建及其高比能量储能性能研究

在不牺牲高功率密度和循环寿命的同时大幅提高超级电容器的能量密度，将使其有望取代二次电池，为能源技术领域带来革命性的进步。针对现阶段制约双电层电容器 （EDLCs）能量密度提高的关键问题，本项目拟以富勒烯及其衍生物为前驱体，有序介孔碳（OMC）为容器和模板，利用高温下前驱体笼状分子在OMC介孔孔道内的破裂重排和自组装过程可控合成石墨烯纳米带（GNRs），并通过杂原子封端处理稳定GNRs的纳米结构，从而构建一种新型的嵌入式石墨烯纳米带/有序介孔碳复合电极材料。重点考察前驱体分子在OMC介孔孔道内的结构转化和自组装过程，探讨GNRs边缘面比例及结构的调控方法，明确复合材料结构与EDLCs性能之间的构效关系，最终通过对复合材料结构的精细设计和调控，实现EDLCs能量密度的大幅提升。本项目的实施有望为高比能量EDLCs开发一种性能优异的新型电极材料，为EDLCs最终取代二次电池带来希望。

The development of the supercapacitor with comparable energy density to that of batteries would bring a revolutionary advancement in energy technology.At present, the energy density of the supercapacitors based on electrical double layer capacitance is currently far lower than that of batteries, which limits their adoption to those applications that require high cycle life and power density. Based on the key factors affecting the further improvements in the energy density of supercapacitors, this project suggestes a graphene nanoribbons@ordered mesoporous carbon composite with special structure and excellent supercapacitive behavior by self-assembly of graphene nanoribbons using fullerene as precursor within the mesopores of carbon template. This project intends to emphasis on the investigation into the structure conversion and self-assembly process of the precursor to graphene nanoribbons within the mesopores of carbon template. Meanwhile, the method to adjust the edge architecture and space configuration of the GNRs would be explored. Futhermore, this project would try to illuminate the relationship between the architecture and the supercapacitive performance of the suggested composite. The aim of this project is to greatly improve the energy density of supercapacitors without sacrificing cycle life or high power density by subtle adjustment of the architecture and surface chemistry of the electrod materials. The smooth implementation of this proposed project would provide a new strategy for the great improvement of the energy density of supercapacitors.