Polyaniline/porous carbon electrodes by chemical polymerisation: Effect of carbon surface chemistry

Bleda-Martı́nez, M.J.; Morallón, Emilia; Cazorla‐Amorós, Diego

doi:10.1016/j.electacta.2007.01.073

Cited by 62 publications

(33 citation statements)

References 44 publications

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“…Capacitance results are expressed in F/g taking into account the weight of the whole electrode material, including Pani 54. However, the accessibility of electrolyte ions into the pores inside the electrode is limited; that is, only certain parts of electrode material close to the interface between electrolyte and electrode can be used effectively during electrochemical capacitance measurements.…”

Section: Resultsmentioning

confidence: 99%

Preparation and comparison of two electrodes for supercapacitors: Pani/CNT/Ni and Pani/Alizarin‐treated nickel

Köysüren

Pan

et al. 2009

J of Applied Polymer Sci

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Polyaniline in emeraldine form was synthesized in the presence of multiwalled carbon nanotubes (CNTs), and the electrochemical capacitance performance of thus formed composite as electrode material has been studied. The polyaniline/carbon nanotubes (Pani/CNT) composite is found to result in a higher specific capacitance than that of either composite constituent, attributable to the double-layer capacitance behavior of the nanotubes in the Pani/CNT system. However, once assembled into a two-electrode cell, lower than expected specific capacitance values from 1 to 20 F/g were obtained, and such reduction is most likely caused by the contact resistance between the Pani/CNT electrodes and the nickel (Ni) current collectors. To improve the situation, a chemical treatment was applied to the nickel foil, and the Pani solution is then deposited on the surface of the foil to form a coated structure (Pani/Ni). The thickness and weight of the Pani films can be controlled by adjusting the concentration of the Pani solution. The specific capacitance of the cell with electrodes made of the new Pani/Ni composite was found to reach as high as 35.5 F/g.

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Section: Resultsmentioning

confidence: 99%

Preparation and comparison of two electrodes for supercapacitors: Pani/CNT/Ni and Pani/Alizarin‐treated nickel

Köysüren

Pan

et al. 2009

J of Applied Polymer Sci

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“…In fact, a few successful attempts have already been carried out on carbon materials as the support for polyaniline. 15,[21][22][23][24][25][26][27][28][29] In these studies, remarkable cooperative effects between the carbon material and the polymer were observed. It was thought that the former provided better mechanical properties 22 and high surface area, whereas the latter could grow as thin films to allow better redox kinetics.…”

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confidence: 99%

Electrochemical Methods to Enhance the Capacitance in Activated Carbon/Polyaniline Composites

Bleda-Martı́nez

Peng

Zhang

et al. 2008

J. Electrochem. Soc.

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Activated carbon/polyaniline composites have been prepared using different electrochemical methods: single-step potentiostatic polymerization, multiple-step potentiostatic polymerization, and potentiodynamic polymerization with the anodic potential limits being fixed at either 0.75 or 1 V ͑vs Ag/AgCl͒. The prepared composite samples were characterized by cyclic voltammetry, galvanostatic charge-discharge tests, electrochemical impedance spectroscopy, and Fourier transform infrared ͑FTIR͒ spectroscopy. The synthesis conditions were found to strongly affect the electrochemical behavior of the samples. High capacitance was achieved by the potentiostatic polymerization methods. As a general trend, higher capacitance and lower resistance were observed in the composites than the sum of these parameters of the individual components. This benefit is attributed to the enhanced electron delocalization along the polymer chains in the composites resulting from the influence of the activated carbon, as evidenced by the FTIR. However, an influence of the polyaniline morphology induced by the porous carbon cannot be discarded.

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“…entific community due to the rapidly increasing demand of energy 23 from green renewable technologies. Batteries and fuel cells have 24 high energy storage capacity but a relatively low specific power 25 density.…”

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confidence: 99%

Asymmetric hybrid capacitors based on activated carbon and activated carbon fibre–PANI electrodes

Salinas-Torres

Sieben

Lozano‐Castelló

et al. 2013

Electrochimica Acta

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Polyaniline/porous carbon electrodes by chemical polymerisation: Effect of carbon surface chemistry

Cited by 62 publications

References 44 publications

Preparation and comparison of two electrodes for supercapacitors: Pani/CNT/Ni and Pani/Alizarin‐treated nickel

Preparation and comparison of two electrodes for supercapacitors: Pani/CNT/Ni and Pani/Alizarin‐treated nickel

Electrochemical Methods to Enhance the Capacitance in Activated Carbon/Polyaniline Composites

Asymmetric hybrid capacitors based on activated carbon and activated carbon fibre–PANI electrodes

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