Green synthesis and electrochemical characterization of rGO–CuO nanocomposites for supercapacitor applications

Self-adhesive carbon grains (SACG) and lignin were prepared from fibres of oil palm empty fruit bunches by a low carbonization temperature and chemical treatment methods, respectively. Green monoliths were prepared from the KOH-treated SACG mixed with the organosolv-treated lignin with their weight percentages of 0%, 5%, 10%, 15% and 20%, respectively. The green monoliths were carbonized and activated into highly porous activated carbon monoliths (ACMs) electrodes for supercapacitor applications. The electrochemical characterization using galvanostatic charge-discharge (GCD) technique was carried out on the supercapacitor cell fabricated using these electrodes. The results show that the addition of 5 wt.% lignin was optimum, corresponding to the higher values of the specific capacitance (137 Fg-1), specific energy (4.13 Wh kg-1), specific power (192 W Kg-1), and a satisfactory value of equivalent series resistance (0.467 Ω) of the supercapacitor.

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Fabrication and electrochemical characterization of two-dimensional ordered nanoporous manganese oxide for supercapacitor applications

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2011.04.034 ◽

2012 ◽

Vol 37 (1) ◽

pp. 860-866 ◽

Cited By ~ 48

Author(s):

Yakun Zhang ◽

Jianling Li ◽

Feiyu Kang ◽

Fei Gao ◽

Xindong Wang

Keyword(s):

Manganese Oxide ◽

Electrochemical Characterization ◽

Two Dimensional ◽

Supercapacitor Applications

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Fabrication and electrochemical characterization of polyaniline nanorods modified with sulfonated carbon nanotubes for supercapacitor applications

Electrochimica Acta ◽

10.1016/j.electacta.2010.10.070 ◽

2011 ◽

Vol 56 (3) ◽

pp. 1366-1372 ◽

Cited By ~ 89

Author(s):

Zhong-ze Zhu ◽

Geng-chao Wang ◽

Min-qiang Sun ◽

Xing-wei Li ◽

Chun-zhong Li

Keyword(s):

Carbon Nanotubes ◽

Electrochemical Characterization ◽

Polyaniline Nanorods ◽

Supercapacitor Applications

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Preparation and electrochemical characterization of porous SWNT–PPy nanocomposite sheets for supercapacitor applications

Synthetic Metals ◽

10.1016/j.synthmet.2008.04.007 ◽

2008 ◽

Vol 158 (15) ◽

pp. 638-641 ◽

Cited By ~ 43

Author(s):

Jiyoung Oh ◽

Mikhail E. Kozlov ◽

Bog Gi Kim ◽

Hyung-Kook Kim ◽

Ray H. Baughman ◽

...

Keyword(s):

Electrochemical Characterization ◽

Supercapacitor Applications

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Fabrication and electrochemical characterization of carbon nanofibers by electrospinning with various MnO2 contents

e-Polymers ◽

10.1515/epoly.2011.11.1.815 ◽

2011 ◽

Vol 11 (1) ◽

Cited By ~ 1

Author(s):

Duk-Rye Chang ◽

Gi-Seok Heo

Keyword(s):

Electron Microscopy ◽

Electrical Conductivity ◽

Scanning Electron Microscopy ◽

Electrochemical Properties ◽

Carbon Nanofibers ◽

Electrochemical Characterization ◽

Probe Method ◽

Supercapacitor Applications ◽

Scanning Electron

AbstractCarbon nanofibers were fabricated by electrospinning with various concentrations of MnO2, carbonization and activation processing for supercapacitor applications. Microstructure and electrochemical properties were characterized by scanning electron microscopy (SEM), the 4-point probe method, and a battery cycler system. It was observed that 8-20 wt.% MnO2/PAN nanofibers had 190- 260 nm diameters. The diameter decreased with increasing MnO2 concentration, but it increased for concentrations greater than 16 wt.%. The 16 wt.% MnO2 solution produced the nanofibers with the smallest diameter. The nanofibers showed capacitor characteristics when fabricated into electrodes, and their electrical conductivity and capacitance increased with increasing MnO2 concentration. The 20 wt.% MnO2/PAN carbon nanofibers showed the highest electrical conductivity value (2.82×10-3 S/cm) and the highest capacitance value (186.28 F/g), which indicates their potential for development of supercapacitor electrodes.

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