【作者】 陈爱兵； 夏克婵； 张林松； 李月彤； 于奕峰；

【Author】 Aibing Chen;Kechan Xia;Linsong Zhang;Yuetong Li;Yifeng Yu;College of Chemistry and Pharmaceutical Engineering,Hebei University of Science and Technology;Department of Resources and Environmental Engineering,Xingtai Polytechnic College;

【机构】 河北科技大学化工学院； 邢台职业技术学院资环系；

【摘要】 采用"溶解-捕获"法制备了高比表面积的氮掺杂介孔空心碳胶囊（N-HMSCCs）,以N-HMSCCs为电极材料测试了其超级电容器性能。采用SEM、TEM、BET、XPS、充放电性能和EIS对N-HMSCCs的表面形貌、孔径结构及电化学性能进行表征。研究结果表明:在6.0 mol L^-1 KOH电解液中,1 A g^-1下其比容量达到206.0F g^-1,5 A g^-1电流密度下3000圈充放电循环后容量保持率高于92.3%。电化学性能的提高主要是由于其独特的介孔空心结构、高比表面积718 m² g^-1和较高的氮掺杂量8.08 wt%。更多还原

【Abstract】 Nitrogen-doped hollow mesoporous spherical carbon capsules（N-HMSCCs） with high capability was developed through "dissolution-capture" method. SEM, TEM, BET, XPS, galvanostatic charge-discharge and EIS were adopted to characterize their surface morphologies and electrochemical performances. The N-HMSCCs show a greater capacitance of 206.0 F g^-1 at a current density of 1 A g^-1 in 6.0 mol L^-1 KOH solution. In addition, the capacity retention after 3000 charge/discharge cycles at a current density of 5 A g^-1 was more than 92.3 %. The enhanced electrochemical performance can be attributed to the unique hollow nanostructure, high surface area of 718 m² g^-1 and nitrogen content of 8.08 wt%.更多还原