Journal of Porous Materials ( IF 2.6 ) Pub Date : 2020-08-06 , DOI: 10.1007/s10934-020-00952-7 Deping Wang , Min Yang , Yongqiang He , Junqiang Liu , Qian Ma , Xiaohong Xia , Hongbo Liu
Honeycomb-like nitrogen-doped porous carbon (HNC) is prepared by using poly(2,6-diaminopyridine) as nitrogen-enriched precursor and silica as hard template. After carbonization and template removal, the obtained HNC possesses an interconnected 3D hierarchical porous structure and a nitrogen level up to 15.31 at.%. Owing to the hierarchical porous structure and abundant active sites in the carbon matrix, the HNC exhibits an excellent capacitive performance with a high specific capacitance of 398 F g−1 at a current density of 0.1 A g−1 and exceptional cycling stability (110.4% retention after 5000 cycles). This work provides a facile and efficient strategy for the large-scale production of nitrogen superdoped interconnected hierarchical carbon framework for high performance supercapacitors.
中文翻译:
蜂窝状氮掺杂多孔碳,用于高性能超级电容器
以聚(2,6-二氨基吡啶)为富氮前驱体,以二氧化硅为硬质模板,制备出蜂窝状掺氮多孔碳(HNC)。碳化和模板去除后,获得的HNC具有相互连接的3D分层多孔结构,氮含量最高为15.31 at。%。由于碳基体中的分层多孔结构和丰富的活性位点,HNC在电流密度为0.1 A g -1时表现出出色的电容性能,具有398 F g -1的高比电容。和出色的循环稳定性(5000次循环后保留率达到110.4%)。这项工作为大规模生产高性能超级电容器的氮超掺杂互连分层碳框架提供了一种简便有效的策略。