A Study on the Electrochemical Properties of MnO2/CNT Nanocomposite for Electrochemical Capacitor Application Using Cavity Microelectrode Technique

2011 ◽  
2002 ◽  
Vol 126 (2-3) ◽  
pp. 253-262 ◽  
Author(s):  
V. Vivier ◽  
C. Cachet-Vivier ◽  
D. Michel ◽  
J.-Y. Nedelec ◽  
L.T. Yu

2015 ◽  
Vol 761 ◽  
pp. 452-456 ◽  
Author(s):  
Raja Noor Amalina Raja Seman ◽  
Rose Farahiyan Munawar ◽  
Jeeferie Abd Razak ◽  
Nor Najihah Zulkapli ◽  
Mohd Shahril Amin Bistamam ◽  
...  

In this study, a mixture of activated carbon (AC) and graphene (G) was coated onto the stainless steel (SS) mesh to produce an electrode for the electrochemical capacitor (EC). Different materials, such as carbon nanotube (CNT) mixed with G, were also used in this experiment to compare the electrochemical properties of both electrodes. The electrochemical properties of the electrode were determined by using cyclic voltammetry (CV). The CV curves of the AC/G electrodes showed good capacitive behaviour, and the highest capacitance values obtained for AC/G and CNT/G electrodes in 1M H2SO4 at 1 mVs-1 were 13 Fg-1 and 4.34 Fg-1, respectively. Meanwhile, the highest capacitance values obtained in 6M KOH at 1 mVs-1 were 14 Fg-1 and 12.07 Fg-1 for AC/G and CNT/G electrodes, respectively.


2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Haihua Zhu ◽  
Shunjin Peng ◽  
Weijie Jiang

The polyaniline (PANI) powder with globular sponge-like morphology was prepared by chemical solution polymerization, and its morphology and chemical structure were characterized by scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR), respectively. The single electrode of electrochemical capacitor was made using the prepared PANI powder as active material and carbon paper as current collector. Electrochemical properties of PANI as a single electrode in 1 M HCl and 1 M H2SO4electrolyte solution were tested by galvanostatic charge/discharge (GCD) and cyclic voltammetry (CV) techniques. It has been found that PANI has higher specific capacitance of 302.43 Fg−1, higher specific energy of 54.44 Wh·kg−1at 0.5 Ag−1, and higher working potential in 1 M HCl than those in 1 M H2SO4.


2010 ◽  
Vol 56 (1) ◽  
pp. 115-121 ◽  
Author(s):  
Changzhou Yuan ◽  
Linrui Hou ◽  
Laifa Shen ◽  
Diankai Li ◽  
Fang Zhang ◽  
...  

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