武汉工程大学学报2023，Vol.45Issue(6)：647-654,8.DOI:10.19843/j.cnki.CN42-1779/TQ.202208019
钠盐改性的N掺杂多孔碳的制备及其电容性能
Fabrication of N-Doped Porous Carbon Modified by Sodium Salt and Investigation on Its Capacitive Properties
摘要
Abstract
Heteroatom doping is one of the effective strategies to improve the electrochemical performance of porous carbon materials.In this work,a N-doped porous carbon material was successfully prepared by a two-step carbonization method using chitosan,melamine and sodium carbonate as a carbon source,a nitrogen source,and an activator,respectively.Subsequently,the morphology,surface area,pore structure and elemental composition of the samples were characterized by scanning electron microscopy,transmission electron microscopy,N2 adsorption-desorption,X-ray powder diffraction,Raman spectroscopy,and photoelectron spectroscopy.Corresponding tests demonstrate that the CMNa-1 displays characteristics of high specific surface area(781.3 m2/g)and rich N content(atomic fraction 5.25%).In addition,the specific capacitance of CMNa-1 is up to 333.0 F/g at a current density of 0.5 A/g.Meanwhile,it exhibits excellent rate performance(0.5-10 A/g,capacitance retention rate of 65.4%)and high stability(specific capacitance retention rate is 96.9%after 8 000 cycles).In conclusion,the as-prepared N-doped porous carbon materials modified by sodium salt demonstrate excellent capacitive performance,providing a new approach for the development of green energy.关键词
壳聚糖/多孔碳/氮掺杂/超级电容器Key words
chitosan/porous carbon/nitrogen doping/supercapacitors分类
信息技术与安全科学引用本文复制引用
刘璐,胡宇琴,刘钰铃,刘东..钠盐改性的N掺杂多孔碳的制备及其电容性能[J].武汉工程大学学报,2023,45(6):647-654,8.基金项目
武汉工程大学大学生校长基金(XZJJ2021072) （XZJJ2021072）
