标题：Simultaneous cross-linking and pore-forming electrospun carbon nanofibers towards high capacitive performance
作者：Jiang, Qinting; Pang, Xin; Geng, Shitao; Zhao, Yuhui; Wang, Xiaomei; Qin, Hua; Liu, Bo; Zhou, Jin; Zhou, Tong
作者机构：[Jiang, Qinting; Pang, Xin; Geng, Shitao; Zhao, Yuhui; Wang, Xiaomei; Qin, Hua; Liu, Bo; Zhou, Tong] Shandong Univ Technol, Sch Phys & Optoelect Engn, 更多
通讯作者：Zhou, Jin;Zhou, T;Zhou, J
通讯作者地址：[Zhou, T]Shandong Univ Technol, Sch Phys & Optoelect Engn, Lab Funct Mol & Mat, Zibo 255049, Peoples R China;[Zhou, J]Shandong Univ Technol, Sch Chem 更多
来源：APPLIED SURFACE SCIENCE
关键词：Cross-linking; Carbon nanofibers; Electrospinning; Supercapacitor;; Nitrogen-enriched
摘要：Large effective surface area and high electrical conductivity are critical for the high-performance carbon-based electrode materials for supercapacitors. Herein, three-dimensional (3D) cross-linked nitrogen-enriched porous carbon nanofibers (C-CNFs) are facilely prepared by electrospinning of polyacrylonitrile/zinc chloride (PAN/ZnCl2) precursor, preoxidation and carbonization of the electrospun composite nanofibers. The ZnCl2 additive makes effects of both cross-linking and pore-forming electrospun carbon nanofibers simultaneously. The asprepared C-CNFs exhibits a good rate capability of about 60% with current densities ranging from 1 to 60 A g(-1) excellent cycling stability of 97.3% over 60,000 cycles in alkaline electrolyte, and high specific capacitance of 214 F g(-1)at 1.0 A g(-1) in acidic electrolyte, all of which are significantly superior to the non-cross-linked carbon nanofibers. The significant enhancement of capacitive performance of C-CNFs can be attributed the synergistic effect of its enlarged specific surface area for more charge accumulation and cross-linked architecture that enable the electrons to fast transfer throughout the fibrous membrane. Moreover, the 3D cross-linked carbon nanofiber networks is expected to be a building block of composite electrodes fabrication for the promising applications in other systems that involve a continuous pathway for electron transport, such as the metal ion batteries and catalysis.