储能科学与技术2025，Vol.14Issue(11)：4112-4122,11.DOI:10.19799/j.cnki.2095-4239.2025.0320
非溶剂致相转换法诱导制备分级多孔碳材料用于提升电化学储能性质
Hierarchical porous carbon via non-solvent phase inversion for enhancing electrochemical energy storage
摘要
Abstract
Nitrogen-doped carbon materials store charge through both electric double-layer capacitance and pseudocapacitance,making them promising electrode candidates for supercapacitors.Their performance strongly depends on porosity and nitrogen-doping level.However,carbon materials often undergo structural collapse during calcination,leading to low porosity and large pore sizes,which hinder electrolyte ion transport and storage.In this study,nitrogen-doped carbon materials with hierarchical porous structures were fabricated using a non-solvent phase inversion technique combined with a template method.Scanning electron microscopy,specific surface area and porosity analyses,and electrochemical measurements were employed to investigate the structure-performance relationships of materials prepared with different methods and components.The macroporous structure provided rapid ion transport channels,while the abundant microporous and mesoporous structures offered ion storage sites and exposed additional nitrogen-doped active centers.Experimental results demonstrated that the sample prepared via non-solvent phase inversion with the addition of 100 mg of modified ZIF-8 particles(PC-PZ100)exhibited superior energy storage performance.The specific capacitance reached 766.0 F/g at 0.1 A/g.After 7000 charge-discharge cycles,the capacitance retention remained at 105.5%,indicating excellent cycling stability.When assembled into a symmetric supercapacitor,PC-PZ100 achieved an energy density of 18.5 Wh/kg at a power density of 249.5 W/kg,confirming its outstanding electrochemical energy storage capability.关键词
分级多孔碳/非溶剂致相转换/氮掺杂/超级电容器Key words
hierarchical porous carbon/non-solvent phase inversion/nitrogen doping/supercapacitor分类
动力与电气工程引用本文复制引用
徐钟韵,严丽霞,秦羽,郭敬轩..非溶剂致相转换法诱导制备分级多孔碳材料用于提升电化学储能性质[J].储能科学与技术,2025,14(11):4112-4122,11.基金项目
国家自然科学基金项目(22304063). （22304063）
