煤沥青烯/PAN基氮掺杂有序介孔炭的制备及电容性能研究

Preparation and capacitive properties of coal asphaltene/PAN based nitrogen doped ordered mesoporous carbon

以SBA-15为硬模板剂,采用溶剂挥发诱导煤基沥青烯与聚丙烯腈(PAN)自组装,制备了氮掺杂有序介孔炭(NOMC)。通过CO_(2)活化,进一步提升NOMC的比表面积及电容性能。结果表明,SBA-15、沥青烯、PAN的比例为1∶1.2∶4.8时,800℃炭化所得炭材料成炭率与有序性均较高。900℃活化后其比表面积、孔容及孔径依次为602.1 m 2/g,0.426 cm 3/g,3.808 nm,且比电容达到127.2 F/g,相比未活化,提升了41.8%。

Nitrogen doped ordered mesoporous carbon(NOMC)was prepared using SBA-15 as a hard template agent and solvent evaporation induced self-assembly of coal based asphaltene with polyacrylonitrile(PAN).Further enhance the specific surface area and capacitance performance of NOMC through CO_(2)activation.The results showed that when the ratio of SBA-15,asphaltene and PAN was 1∶1.2∶4.8,the carbonization rate and orderliness of the carbon material obtained at 800℃were higher.After activation at 900℃,the specific surface area,pore volume,and pore size were 602.1 m 2/g,0.426 cm 3/g,3.808 nm,respectively,and the specific capacitance reached 127.2 F/g,which was 41.8%higher than that of unactivation.