论文部分内容阅读
有序介孔碳比表面积较低,为了增加碳材料的比表面积并且得到合适的孔结构,通常采用活化处理以便在介孔孔墙上留下微孔,其中介孔为离子的快速扩散提供了通道,而孔墙上微孔的存在使介孔向微孔扩散的路径变短,提高材料内部的连通性,促进电解质离子在材料内部的快速传输,最终提高超级电容器的比容量值。本文以F127为软模板,间苯二酚-甲醛树脂作为碳的前驱体,采用一种简单可行的低温水热方法制备出介孔碳材料,然后以KOH为活化剂,考察了不同活化温度对孔结构和电化学性能影响。
Order mesoporous carbon surface area is relatively low, in order to increase the specific surface area of the carbon material and get a suitable pore structure, the activation process is usually used to leave pores in the mesoporous wall, which mesopores provide rapid diffusion of ions While the existence of pores in the pore wall shortens the path for the mesopores to diffuse into the pores and improves the connectivity inside the material to promote the rapid transport of electrolyte ions inside the material and finally increase the specific capacitance of the supercapacitor. In this paper, mesoporous carbon material was prepared by a simple and feasible low temperature hydrothermal method using F127 as soft template and resorcinol-formaldehyde resin as precursor of carbon. Then KOH was used as activator to investigate the effects of different activation temperature Pore structure and electrochemical performance.