Synthesis of nitrogen-doped reduced graphene oxide-multiwalled carbon nanotube composite on nickel foam as electrode for high-performance supercapacitor

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• 作者：Fook Yun Ban^a ; Subramaniam Jayabal^a ; Hong Ngee Lim^b ; Hing Wah Lee^c ; Nay Ming Huang^a ; ^d ; ^{huangnayming@um.edu.my" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Nitrogen atom ; Reduced graphene oxide ; Multi-walled carbon nanotubes ; Nickel foam ; Supercapacitor
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：20-27
• 全文大小：1008 K

文摘

An electrode with nitrogen-doped reduced graphene oxide/multiwall carbon nanotubes deposited on nickel foam (N-rGO/MWCNTs/NF) was successfully prepared using a simple one-pot hydrothermal method. The N-rGO/MWCNTs/NF composite was fabricated as an electrode for supercapacitor application. The supercapacitive performance of the N-rGO/MWCNTs/NF electrode was studied using electrochemical impedance spectroscopy, cyclic voltammetry, and galvanostatic charge/discharge in a 6 M KOH electrolyte solution. The N-rGO/MWCNTs/NF electrode showed an enhanced capacitance compared to rGO/MWCNTs/NF, N-rGO/NF, N-MWCNTs/NF, and bare NF electrodes because of nitrogen atom doping and more accessibility of the electrolyte after the incorporation of MWCNTs between the graphene sheets. The N-rGO/MWCNTs/NF electrode showed a specific capacitance of 142.08 F g⁻¹ at a current density of 1 A g⁻¹ and cycling stability with 76.2% of its initial capacitance after 1000 charge/discharge cycles.