文献类型：期刊文献

英文题名：Comparative study of electrospun nitrogen-doped porous and hollow porous flexible carbon nanofibers for supercapacitor applications

作者：Luo, Yongmei Li, Junqi Liu, Wei Li, Yang Zhang, Jiangang Luo, Yuan

第一作者：罗咏梅

通信作者：Liu, W[1];Li, Y[1]

机构：[1]Guizhou Inst Technol, Guiyang 550025, Peoples R China;[2]Guizhou Univ, Sch Mat & Met, Guiyang 550025, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Guiyang 550025, Peoples R China.|贵州理工学院;

年份：2026

卷号：257

外文期刊名：CARBON

收录：;EI(收录号：20262420887770);WOS:【SCI-EXPANDED(收录号:WOS:001797116600001)】；

基金：This work was supported by Major Science and Technology Special Project of Guizhou Province (QiankeheRencaiXKBF [2025] 006), National Natural Science Foundation of China (52263004), Innovative young scientific and technological talents training projects of Guiyang City (Zhu Ke He Tong [2024] 2-12), Guizhou Provincial Science and Technology Innovation Leading Talent Workstation for High-Value Utilization of Solid Wastes in Aluminum Industry (Qiankehe Platform KXJZ & lbbrk;2025 & rbbrk;019) .

语种：英文

外文关键词：Electrospinning; Nitrogen-doped; Carbon nanofibers; Porous structure; Flexible supercapacitors

摘要：Despite the immense potential of electrospun carbon nanofibers in supercapacitor applications, precisely engineering their hierarchical pore structures and surface chemistry to maximize active sites remains a formidable challenge. In this study, nitrogen-doped porous and hollow porous carbon nanofibers(NPCNFs/NHPCNFs) were synthesized via the electrospinning of polyacrylonitrile (PAN), poly(methyl methacrylate) (PMMA), and zinc acetate dihydrate (ZAH), followed by a controlled carbonization process. The fiber morphology, pore architecture, nitrogen doping, and degree of graphitization were systematically tuned by varying the carbonization temperature to exploit the differential thermal decomposition of PMMA and ZAH. Electrochemical evaluations reveal that the NPCNFs exhibit higher capacitance than their hollow counterparts, with capacitive performance primarily depending on mesopore volume and specific surface area. The optimized NPCNF-800 electrode delivers a high specific capacitance of 375 F g-1 at 0.5 A g-1, excellent rate capability with 88.5% capacitance retention at 10 A g-1 and outstanding cycling stability (95.1% retention after 10000 cycles). The enhanced performance is attributed to the synergistic effects of nitrogen doping, enlarged mesopore volume, improved electrical conductivity and efficient ion/electron transport within the one-dimensional hierarchical porous framework. Furthermore, a symmetric flexible supercapacitor assembled using the optimized electrode achieves a maximum energy density of 43.4 Wh kg-1at 0.3 kW kg-1 and maintains 33.2 Wh kg-1 at 12 kW kg-1 while preserving excellent mechanical flexibility.