林产化学与工业2026，Vol.46Issue(4)：65-75,11.DOI:10.20195/j.issn.0253-2417.2025070
微波辅助氮掺杂与孔结构调控提升炭电极超级电容器性能
Microwave-assisted Nitrogen Doping and Pore Structure Engineering for Enhancing the Supercapacitor Performance of Carbon Electrodes
摘要
Abstract
Nitrogen-rich biomass-based porous carbon materials were prepared from soybean straw by introducing the bifunctional template C3 N4 through green liquefaction technology and microwave hydrothermal doping technology.This study primarily examined the effects of three different doping methods—solid-solid doping,hydrothermal doping,and microwave hydrothermal doping—on the structure and properties of porous carbon materials.The results indicated that microwave hydrothermal technology was more conducive to the balanced conversion of nitrogen bonding forms into graphitic nitrogen(N-Q),pyridine nitrogen(N-6),and oxidized nitrogen(N-X).Meanwhile,as nonmetallic heteroatoms were deeply incorporated into carbon materials at the molecular level,these nitrogen-containing groups were more effective on enhancing electrical conductivity and could promote redox reactions in which nitrogen served as an active site.In the three-electrode system,tested at a current density of 0.5 A/g,the specific capacitance of samples prepared via microwave hydrothermal doping(Carbon-M)reached as high as 261.55 F/g,which was significantly higher than 157.60 F/g for solid-solid doping(Carbon-S)and 143.45 F/g for hydrothermal doping(Carbon-H).When the current density was increased from 0.5 A/g to 10 A/g,Carbon-M's specific capacitance remained at 193.64 F/g,with a capacity retention rate of 74.04%.After 10 000 long-term cycles,the capacitance retention remained at 93.2%,demonstrating excellent stability.In a two-electrode system,the material exhibits a specific capacitance of 21.2 F/g at 1 A/g.Notably,the energy density retained 69%of its initial value even with a 20-fold increase in power density,showing excellent energy retention.This suggests that the preparation method holds great promise for advanced energy storage applications.关键词
富氮生物质/液化/微波水热/杂原子掺杂/超级电容器Key words
nitrogen-enriched biomass/liquefaction/microwave-hydrothermal/heteroatom doping/supercapacitors分类
化学化工引用本文复制引用
郭玲钰,赵鑫,赵西夏,陈洪雷,赵莹,魏桂涓..微波辅助氮掺杂与孔结构调控提升炭电极超级电容器性能[J].林产化学与工业,2026,46(4):65-75,11.基金项目
国家自然科学基金资助项目(32271801) （32271801）
浙江省科技计划资助项目(2024C02008) （2024C02008）
