Electrodeposited manganese dioxide nanostructures on electro-etched carbon fibers: High performance materials for supercapacitor applications

Kazemi, Sayed Habib; Maghami, Mostafa Ghaem; Kiani, Mahdi

doi:10.1016/j.materresbull.2014.08.032

Cited by 32 publications

(17 citation statements)

References 38 publications

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“…A simple and convenient way is to use the direct redox reactions between KMnO 4 and carbon in situ at relatively low temperature [22,24,25], or in hot H 2 SO 4 solution [12,26]. In addition, MnO 2 /CFP composites could be obtained by hydrothermal routes [27,28] and electrodeposition methods [29,30]. However, the controllable synthesis of MnO 2 loading on CFP is still rarely explored but fascinating.…”

Section: Introductionmentioning

confidence: 99%

Self-grown MnO 2 nanosheets on carbon fiber paper as high-performance supercapacitors electrodes

Dang

Dong

Zhang

et al. 2016

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

Self-grown MnO 2 nanosheets on carbon fiber paper as high-performance supercapacitors electrodes

Dang

Dong

Zhang

et al. 2016

Electrochimica Acta

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“…Depending on the electrode material and the energy storage mechanism, there are two major categories of supercapacitors. [1][2][3][4][5][6][7][8] The rst type is electrical double layer capacitors (EDLCs) that employ carbon based materials and their charge storage ability originates from non-faradaic processes.…”

Section: Introductionmentioning

confidence: 99%

Polyaniline–ionic liquid derived ordered mesoporous carbon nanocomposite: synthesis and supercapacitive behavior

et al. 2015

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Nanocomposite of polyaniline formed within ionic liquid derived ordered mesoporous carbon (PANi@IOMC) was prepared by polymerization of aniline in the presence of IOMC for electrochemical capacitors. The morphology and structure of the nanocomposite were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), and porosimetry. To fabricate the supercapacitor electrode, an appropriate mixture of PANi@IOMC nanocomposite and activated carbon was sonicated in acetone, and then the resulting dispersion was coated on the carbon fiber paper using a spray-coating technique. Because of relatively high surface area of nanocomposite for Faradic redox reactions, a maximum specific capacitance of 542 F g -1 in addition to 85% specific capacitance retention after 1000 successive charge-discharge cycles were obtained. The excellent electrochemical performance of the nanocomposite compared to the pure PANi or IOMC, was attributed to the covalent bonding between PANi and carbon structure in the presence of N-phenyl-p-phenylenediamine (NPP) as an initiator for linking the polymer chains to the surface. The results of the present work highlight the efficiency of the interfacial chemistry of NPP in generating the nanocomposite with enhanced conductivity and high surface area. IntroductionSupercapacitors, also known as electrochemical capacitors, represent an important class of energy storage systems because of their desirable properties such as long cycle lifetime, high power density, fast charge and discharge rates and excellent operational stability. Depending on the electrode material and the energy storage mechanism, there are two major categories of supercapacitors 1-8 . The first type is electrical double layer capacitors (EDLCs) that employ carbon based materials and their charge storage ability originates from Non-Faradaic processes.It should be noted that EDLCs store the electric charges by reversible electrostatic adsorption of electrolyte ions at the surface of the electrode. Thus, the properties of the employed electrode materials and the electrolyte in the supercapacitor structure play the most important role in the supercapacitive performance of EDLCs. The second type is pseudocapacitors in which the charge storage mechanism strongly depends on the Faradaic reactions occur at the exterior or interior surfaces of the electrode materials 1, 9, 10 . Pseudocapacitors can be divided into two groups; pseudocapacitors based on transition metal oxides/hydroxides and pseudocapacitors based on conducting polymers. Transition metal oxides/hydroxides can be utilized for relatively fast and reversible redox reactions to take place at the surface of electrode materials. However, most of the metal oxides suffer from poor electrical conductivity, although they have high specific capacitances. In contrast with the first group, the second group of pseudocapacitors based on conducting polymers offer remarkable electrical conductivity in addition to high ...

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“…10,14,15,18,[22][23][24][25][26][27][28] Among them, manganese oxides and hydroxides are of particular importance due to their low price, high theoretical specic capacitance and low toxicity. 7,10,13,23,[32][33][34][35][36][37][38][39][40][41][42] It could therefore be possible to overcome the low specic capacitance of carbon materials. 2,11,30,31 For carbon based materials incorporated with transition metal oxides, the charge storage mechanism relies on both electrical double-layer mechanisms in addition to the contribution of the redox reactions.…”

Section: Introductionmentioning

confidence: 99%

“…29 It should be mentioned that the carbon nanostructures can afford the platform for decorating the metal oxide nanostructures to circumvent their agglomeration, thus providing superior utilization of such materials. 32 It is concluded that dispersing the MnO 2 nanoparticles on conductive substrates could result in accomplishing the redox reactions in the charge storage mechanism by enhancing the electrical conductivity of the MnO 2 based electrodes. 7,10,13,23,[32][33][34][35][36][37][38][39][40][41][42] It could therefore be possible to overcome the low specic capacitance of carbon materials.…”

Section: Introductionmentioning

confidence: 99%

Manganese dioxide nanoparticles incorporated within ionic liquid derived fibrillated mesoporous carbon: electrode material for high-performance supercapacitors

et al. 2015

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This article is the first example of the incorporation of metal oxide nanoparticles within ionic liquid derived nano-fibrillated mesoporous carbon (IFMC), as electrode materials for supercapacitor applications. Electron microscopy observations and X-ray diffraction analysis, in addition to gas adsorption/desorption analysis, confirm the incorporation of manganese dioxide within the mesoporous nanofibers (MnO 2 @IFMC) with a high surface area of about 388 m 2 g À1 . MnO 2 @IFMC was successfully employed as a new electrode material for high-rate supercapacitors in neutral media. The one-dimensional nano-composite shows high performance and excellent life cycle stability according to electrochemical studies. This substantial performance and high specific capacitance may originate from the high surface area of the nanocomposite, shortened diffusion length and mesoporous openings on the outer surface. Also, augmented conductance of the carbon nanofibers due to the heteroatom (nitrogen) effect can be considered as an important reason for the high-rate capability and excellent specific capacitance (almost 1000 F g À1 at 10 mV s À1 ). Our results indicate that MnO 2 @IFMC can be considered as a promising electrode material for high-rate supercapacitors.

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Electrodeposited manganese dioxide nanostructures on electro-etched carbon fibers: High performance materials for supercapacitor applications

Cited by 32 publications

References 38 publications

Self-grown MnO 2 nanosheets on carbon fiber paper as high-performance supercapacitors electrodes

Self-grown MnO 2 nanosheets on carbon fiber paper as high-performance supercapacitors electrodes

Polyaniline–ionic liquid derived ordered mesoporous carbon nanocomposite: synthesis and supercapacitive behavior

Manganese dioxide nanoparticles incorporated within ionic liquid derived fibrillated mesoporous carbon: electrode material for high-performance supercapacitors

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