In-situ electrochemical polymerization of multi-walled carbon nanotube/polyaniline composite films for electrochemical supercapacitors

Zhang, Jing; Kong, Ling‐Bin; Wang, Bin; Luo, Yan‐Ling; Kang, Long

doi:10.1016/j.synthmet.2008.09.018

Cited by 232 publications

(115 citation statements)

References 47 publications

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“…Dispersed CNT reinforced composites are usually prepared by melt-mixing [62] , mixing solution [63] or in situ polymerization [64] . Also, their carbon content is generally lower than 5 wt.% and the nanotube bundles are dispersed through the matrix without forming a network.…”

Section: Cnt Buckypaper Reinforced Polymer Compositesmentioning

confidence: 99%

Carbon nanotube buckypaper reinforced polymer composites: a review

et al. 2017

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RbstractThis review provides valuable information about the general characteristics, processing conditions and physical properties of carbon nanotube buckypaper (BP) and its polymer composites. Vacuum filtration is the most common technique used for manufacturing BP, since the carbon nanotubes are dispersed in aqueous solution with the aid of surfactant. Previous works have reported that mechanical properties of BP prepared by vacuum filtration technique are relatively weak. On the other hand, the incorporation of polymer materials in those nanostructures revealed a significant improvement in their mechanical behavior, since the impregnation between matrix and BP is optimized. Electrical conductivity of BP/polymer composites can reach values as high as 2000 S/m, which are several orders of magnitude greater than traditional CNT/polymer composites. Also, BP can improve remarkably the thermal stability of polymer matrices, opening new perspectives to use this material in fire retardant applications.

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Section: Cnt Buckypaper Reinforced Polymer Compositesmentioning

confidence: 99%

Carbon nanotube buckypaper reinforced polymer composites: a review

et al. 2017

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“…The porous materials based on carbon [12][13][14][15][16],the transition metal oxides [17][18][19][20][21]and conducting polymers [22,23]are some of the electrode materials available used in super-capacitors. Each one of these materials has advantages and disadvantages, therefore, the trend is directed towards the use of hybrid electrodes as the mentioned composite of nylon/H2T(p-NH2)PP/GO which combines the individual beneficial aspects and tries to compensates the limitations for each individual compound.…”

Section: Introductionmentioning

confidence: 99%

Transport of Protons and Capacitive Properties of the Nylon/Porphyrin/Graphene Oxide Coating

Ca¹,

Menchaca‐Campos²,

Ma³

et al. 2017

Preprint

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Electrochemical impedance (EI) measurements were performed to evaluate the nylon 66/-tetra-(para-aminophenyl) porphyrin (H2T(p-NH2)PP)/graphene oxide (GO) film coating on stainless steel and compared to the nylon/H2T(p-NH2)PP and nylon/GO film samples using 1M H2SO4 as electrolyte. The nylon/H2T(p-NH2)PP and nylon/GO composite films showed high electrochemical impedance in the order of 10 9 ohm-cm 2 and a system controlled by mass transfer, product of a diffusion process at low frequencies with a resistance up to 5 orders of magnitude, indicating the diffusion of protons through the coating and a decrease in the metal dissolution. Otherwise, the nylon/H2T(p-NH2)PP/GO film compound evaluated show good ionic conductivity and electrochemical stability in the acid environment, acting porphyrin as a catalyst to the passage of protons through the film, reducing its electrochemical impedance up to 7 orders of magnitude with respect to the compounds nylon/H2T(p-NH2)PP and nylon/GO. Likewise, good capacitance values are also shown by modifying the concentrations of porphyrin and GO reinforcing materials. These properties are important for technological applications, such as anticorrosion coating for bipolar plates or membrane in a fuel cell type PEM, super-capacitors, etc.

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“…However, there are distinctions between them with respect to charge storage mechanisms. In the case of supercapacitors there are two possible mechanisms for energy storage: (1) firstly, by the accumulation of charge on the surfaces of the active material, where this process occurs by the electrostatic charge accommodation at the electrical double-layer, through the adsorption of the electrolyte ions on the surfaces of electrically stimulated carbon-based materials; (2) secondly, by the fast and reversible redox or Faradaic reactions during the oxidation/reduction process, where the devices are called as pseudocapacitors, whose electrodes are made up by transition metal-oxides, hydroxides, and/or conducting polymers oxides or conducting polymers, [2][3][4][5][6] . Recently, supercapacitors have played an increasingly important role in applications such as the auxiliary power source in combination with battery electric and hybrid vehicles [6] , because they exhibit power densities which are about ten times higher than those of batteries, showing excellent cycling stability even after hundreds of thousands of charge/discharge cycles.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, conducting polymers are one of the most studied due to their characteristics, such as high electrical conductivity, electrochemical reversibility, low weight, and stability in the air [2][3][4][5][6][7] . Particularly, cconducting polymers such as polyaniline (PAni) [9,10] , polypyrrole [11,12] , poly(ethylenedioxythiophene) polythiophene [4] have appeared as the most cited in literature. In this context, PAni is a very promising candidate for practical applications due to its reversible control of electrical properties by both charge-transfer doping and protonation, good processability, environmental stability, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Influence of the polymeric coating thickness on the electrochemical performance of Carbon Fiber/PAni composites

et al. 2015

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SbstractCarbon fiber/polyaniline composites (CF/PAni) were synthesized at three different deposition time of 30, 60 and 90 min by oxidative polymerization. The composite materials were morphologically and physically characterized by scanning electron microscopy and by Raman spectroscopy, respectively. Their electrochemical responses were analyzed by cyclic voltammetry, by galvanostatic test, and by electrochemical impedance spectroscopy. The influence of the PAni layer thickness deposited on carbon fibers for the composite formation as well as for their electrochemical properties was discussed. The CF/PAni-30 showed a nanometric thickness with more homogeneous morphology compared to those formed in deposition times of 60 and 90 min. It also showed, from the electrochemical impedance spectroscopy measurements, the lowest charge transfer resistance value associated to the its highest value for the double-layer capacitance of 180 Fg -1 making it a very strong candidate as a supercapacitor electrode.

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In-situ electrochemical polymerization of multi-walled carbon nanotube/polyaniline composite films for electrochemical supercapacitors

Cited by 232 publications

References 47 publications

Carbon nanotube buckypaper reinforced polymer composites: a review

Carbon nanotube buckypaper reinforced polymer composites: a review

Transport of Protons and Capacitive Properties of the Nylon/Porphyrin/Graphene Oxide Coating

Influence of the polymeric coating thickness on the electrochemical performance of Carbon Fiber/PAni composites

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