Synthesis of nitrogen-doped reduced graphene oxide-multiwalled carbon nanotube composite on nickel foam as electrode for high-performance supercapacitor
Synthesis of nitrogen-doped reduced graphene oxide-multiwalled carbon nanotube composite on nickel foam as electrode for high-performance supercapacitor
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DOI：
10.1016/j.ceramint.2016.07.087
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发表时间：
2017-01-01
影响因子：
5.2
通讯作者：
Huang, Nay Ming
中科院分区：
文献类型：
--
作者：
Ban, Fook Yun;Jayabal, Subramaniam;Huang, Nay Ming
采用简单的一锅水热法成功制备了泡沫镍基氮掺杂还原氧化石墨烯/多壁碳纳米管（N-rGO/MWCNTs/NF）电极。制备了N-rGO/MWCNTs/NF复合材料作为超级电容器应用的电极。使用电化学阻抗谱、循环伏安法和恒电流充电/放电在6 M KOH电解质溶液中研究了N-rGO/MWCNTs/NF电极的超级电容性能。与rGO/MWCNT/NF、N-rGO/NF、N-MWCNT/NF和裸NF电极相比，N-rGO/MWCNT/NF电极显示出增强的电容，这是因为氮原子掺杂和在石墨烯片之间并入MWCNT之后电解质的更易接近性。N-rGO/MWCNTs/NF电极在1 A g（-1）的电流密度下显示出142.08 F g（-1）的比电容，并且在1000次充电/放电循环后循环稳定性为其初始电容的76.2%。
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 super capacitive 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.