基于插层的层状过渡金属氧化物二维超薄纳米片的杂化及其作为超级电容器电极材料的性能研究

本项目拟利用层状过渡金属氧化物独特的结构和物理化学性质，建立和发展多种制备方法，藉此实现层状过渡金属氧化物2D超薄纳米片与导电聚合物或炭材料在分子水平上的插层杂化并实现硫化物的转化或硫掺杂，从而获得相应的纳米复合材料，使得材料具有高导电性的同时其层间大量存储电荷的反应位点得以充分利用；深入研究此类复合材料的制备方法和杂化复合掺杂机理以及各种实验参数对材料结构、形貌、尺寸以及物理化学性质等的影响及其规律，从而实现材料的可控合成；全方位评价和考察所得复合材料作为超级电容器电极材料的各项性能，结合详细的结构和物性表征结果，在微观层次上阐明内在的构效关系以及组分间的协同储能机制；在此基础上，通过进一步完善制备方法和优化实验条件，获得具有高比电容、高能量/功率密度以及稳定循环性能的超级电容器电极材料，从而为实现从材料设计、制备方法、复合结构到高性能超级电容器电极材料提供有价值的理论基础和实验依据。

Taking advantages of the unique structure and physicochemical properties of layered transition metal oxides, this project is mainly focused on the study of intercalative hybridization of a series of layered transition metal oxides with conductive polymers or carbon-based materials and their electrochemical performance as the supercapacitor electrode. We will try to establish and develop the corresponding preparation methods and investigate the effects of various experimental parameters on the structure, morphology, size and physicochemical properties of the resulted materials. Thus, the hybridization mechanism can be elucidated and the controllabe synthesis can be realized. We will also fully evaluate the electrochemical performance of the obtained materials as the supercapacitor electrode. Combined with the detailed characterization results, the structure- performance relationship and the synergetic energy-storage mechanism will be disclosed microscopically. On the basis of the above research, it is expected that electrode materials with a high specific capacitance, high energy/power density and stable cycling performance will be obtained by further modifing the preparation method and optimizing experimental parameters. This project will provide experimental and theoretical basis for the rational design and preparation of the high-performance electrode materials in supercapacitor.