CAJ | 학술논문

含氮聚合物材料在惰性气氛下热解能够产生掺氮多孔碳材料.基于化学聚合法合成多巴胺(DA)改性的聚吡咯(PDA-PPy),高温热解制备出掺氮多孔碳材料(NPC).用傅里叶变换红外(FTIR)光谱,拉曼光谱, X射线光电子能谱(XPS)分析和扫描电镜(SEM)研究其结构与形貌.随着DA与吡咯(Py)单体的摩尔比不断变化, PDA-PPy的形貌也随之改变,进而影响NPC的超电容性能.循环伏安和恒流充放电测试表明,当DA与Py单体的摩尔比为0.5时,在0.5 A?g-1的电流密度下, NPC的比电容可以达到210 F?g-1,电流密度为10 A?g-1时,比电容可以达到134 F?g-1,电容保持率为63.8%.
함담취합물재료재타성기분하열해능구산생참담다공탄재료.기우화학취합법합성다파알(DA)개성적취필각(PDA-PPy),고온열해제비출참담다공탄재료(NPC).용부리협변환홍외(FTIR)광보,랍만광보, X사선광전자능보(XPS)분석화소묘전경(SEM)연구기결구여형모.수착DA여필각(Py)단체적마이비불단변화, PDA-PPy적형모야수지개변,진이영향NPC적초전용성능.순배복안화항류충방전측시표명,당DA여Py단체적마이비위0.5시,재0.5 A?g-1적전류밀도하, NPC적비전용가이체도210 F?g-1,전류밀도위10 A?g-1시,비전용가이체도134 F?g-1,전용보지솔위63.8%.
Carbonization of a nitrogen-containing polymer under inert atmosphere has been used to obtain nitrogen-enriched carbon materials. Herein, we synthesized dopamine-modified polypyrrole (PDA-PPy) via chemical polymerization, which was then carbonized under nitrogen atmosphere to produce nitrogen-doped porous carbon materials (NPC). The structure and morphology of the NPC were investigated by Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). By regulating the molar ratio of pyrrole monomer to dopamine, the morphology of PDA-PPy and the capacitive performance of NPC could be control ed. At a current density of 0.5 A?g-1, the specific capacitance of NPC-0.5 (the molar ratio of dopamine to pyrrole monomer is 0.5) is ca 210 F?g-1. Even at a current density of 10 A?g-1, the specific capacitance of NPC-0.5 is up to 134 F?g-1 and the retention rate is 63.8%.