N-doped carbon nanofibers arrays as advanced electrodes for supercapacitors
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第20期
论文作者：Guoxiang Pan Feng Cao Yujian Zhang Xinhui Xia
文章页码：144 - 151
摘 要：The advancement of supe rcapacitors largely relies on the innovation of electrode materials with high-rate performance and ultra-long cycling stability.In this work,unique N-doped nanofibers on carbon cloth（NCNFs/CC） are prepared by an electrodepositio n-annealing method for application in supercapacitors.The as-prepared N-doped nanofibers（N-CNFs） show diameters of 100-150 nm and cross-link with each other fo rming porous conductive network.Due to enhanced conductivity and reinforced structural stability,the N-CNFs/CC arrays are demonstrated with better electrochemical performance than CNFs/CC counterpart,including higher specific capacitance(195.2 F g-1 at a current density of 2.5 A g-1),excellent rate capability(80.5.% capacity retention as the rate increases from 2.5-20 A g-1) and good cycling stability（99.5.%retention after 10,000 cycles）.These reinforced electrochemical properties are attributed to N-doped conductive architecture with faster ion/electron transfer paths and more active sites.Our findings may offe r a new way for construction of advanced high-rate electrodes for energy storage.
Guoxiang Pan1，Feng Cao1，Yujian Zhang1，Xinhui Xia2
1. Department of Materials Chemistry, Huzhou University2. State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and Department of Materials Science and Engineering, Zhejiang University
摘 要：The advancement of supe rcapacitors largely relies on the innovation of electrode materials with high-rate performance and ultra-long cycling stability.In this work,unique N-doped nanofibers on carbon cloth（NCNFs/CC） are prepared by an electrodepositio n-annealing method for application in supercapacitors.The as-prepared N-doped nanofibers（N-CNFs） show diameters of 100-150 nm and cross-link with each other fo rming porous conductive network.Due to enhanced conductivity and reinforced structural stability,the N-CNFs/CC arrays are demonstrated with better electrochemical performance than CNFs/CC counterpart,including higher specific capacitance(195.2 F g-1 at a current density of 2.5 A g-1),excellent rate capability(80.5.% capacity retention as the rate increases from 2.5-20 A g-1) and good cycling stability（99.5.%retention after 10,000 cycles）.These reinforced electrochemical properties are attributed to N-doped conductive architecture with faster ion/electron transfer paths and more active sites.Our findings may offe r a new way for construction of advanced high-rate electrodes for energy storage.
关键词：
