Electrode materials for electrochemical capacitors based on poly(3,4 ethylenedioxythiophene) and functionalized multi-walled carbon nanotubes characterized in aqueous and aprotic electrolytes

Dettlaff, Anna; Das, P.; Komsiyska, Lidiya; Osters, Oliver; Łuczak, Justyna; Wilamowska‐Zawlocka, Monika

doi:10.1016/j.synthmet.2018.07.006

Cited by 12 publications

(9 citation statements)

References 61 publications

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“…Interestingly, the latter is comparable to the CµS one; this is probably due to the high density of microspheres. The decrease in the I D /I G ratio with the growing temperature suggests the ordering of the graphitic structure [14,15]. Moreover, the similar I D /I D' ratio for all of the samples is equal to 4.6 ± 0.6, which suggests that the presence of edge defect is predominant.…”

Section: Effect Of the Temperature During Cvdmentioning

confidence: 75%

Development of Microstructured Carbon Coatings by Substrate-Catalytic CVD

2021

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Carbon nanostructured films were synthesized by chemical vapor deposition (CVD) on H18 stainless steel (AISI 440C) sheets with an H2/CH4/N2 gas mixture at various substrate temperatures. During the synthesis, the iron and chromium oxide layer was formed between the steel and carbonaceous layer. The carbon films exhibited wall-like and spherical morphologies and structures, as characterized by scanning electron microscopy and Raman spectroscopy. It was found that the synthesis temperature affects the microsphere density and, therefore, also in the electrochemical behavior. The electrochemical behavior of nanostructured carbon coatings strongly depends on the CVD deposition conditions. The best corrosion resistance (Rp = 11.8 MΩ·cm2, Icorr = 4.4 nA·cm−2) exhibits a nanostructured carbon sample with a moderate amount of sp2-C-rich carbon microspheres CμSs synthesized at 700 °C. The corrosion resistance of the nanostructured carbon coating is better than raw stainless steel.

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Section: Effect Of the Temperature During Cvdmentioning

confidence: 75%

Development of Microstructured Carbon Coatings by Substrate-Catalytic CVD

2021

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“…Another way of obtaining a good composite is by adding a conducting polymer to the carbon material. It has been confirmed that mixing PANI with AC (Wang et al, 2019) or PEDOT and CNTs (Dettlaff et al, 2018) results in a higher specific capacitance of carbon-conductive polymer materials than individual components separately. Also, mixing metal oxides with carbonaceous materials develops a specific capacitance.…”

Section: Nanocomposites (For Hybrid Systems)mentioning

confidence: 86%

Three-Dimensional Architectures in Electrochemical Capacitor Applications – Insights, Opinions, and Perspectives

et al. 2020

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This review focuses on describing the current state-of-the-art research in the synthesis of 3D architectures for electrochemical capacitor applications. The selection is based on both template and non-template strategies. Particular attention has been paid to carbon materials because of their structural interconnection, as they create not only the desired hierarchical porous channels but also ensure high conductivity and mechanical stability. A comprehensive overview of electrode materials is presented here with a detailed discussion of composite solutions, including their advantages and disadvantages. Numerous examples from the literature are presented for individual solutions. The future challenges posed for this type of material are finally summarized.

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“…where -Z" is the imaginary impedance, A is the surface area of electrode covered by active mass, and f is the frequency (in Hz) within the semicircle region of the Nyquist plot. [39,40] By comparing these electrodes with the use of a plot of areal capacitance as a function of frequency (in logarithmic scale) in Figure 9b values of the electrodes at high frequency follow the trend in an ascending order of PMEL/fMWCNT/GCE < PANIMEL/fMWCNT/GCE < PANI/fMWCNT/GCE < fMWCNT/GCE < bare GCE. Electrodes with film materials enriched in nitrogen have a significant impact on the electron donor-acceptor properties of the film material and the contribution of the heteroatom to the delocalized π-electron system.…”

Section: Electrochemical Impedance Spectroscopy (Eis) Of the Various Electrodesmentioning

confidence: 99%

Properties of electrochemically copolymerized aniline and melamine on functionalized multiwalled‐carbon nanotube film electrodes

Tham

Subrata

Fisher

et al. 2021

Electrochemical Science Adv

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The electrochemical properties of polymerized aniline (PANI) and polymerized melamine (PMEL) that were electrochemical copolymerized (PANIMEL) on a glassy carbon electrode (GCE) that had been coated with functionalized multiwalled carbon nanotubes (fMWCNT) to form a PANIMEL/fMWCNT/GCE film electrode were studied, with an aim toward electrochemical energy storage (EES). A number of factors, such as the choice of working electrode, electrolyte, switching potential, applied scan rate, and type of fMWCNTs, were initially investigated and evaluated during the individual electrochemical polymerization of aniline and melamine via successive potential cycling. The electrochemical copolymerisation of aniline and melamine was then studied with an ideal monomeric ratio of 1:3 that gave an optimal ratio of the voltammetric peak current heights with distinguishable redox peak potentials. Variable scan rate cyclic voltammetry (CV) of the electrosynthesized copolymer film electrode confirmed the dominance of the surface-confined electron transfer process at the electrode.The electrochemical stability of the copolymer film electrode was also assessed and revealed a limited cyclability of the daughter polymeric melamine, which was hypothesized to be due to an excessive nitrogen content combined with a low porosity that led to a poor ion intercalation-deintercalation mechanism.Electrochemical impedance spectroscopy (EIS) was performed to evaluate the electrochemical performance of the copolymerized film electrode with other control electrodes. The corresponding EIS results suggested that the copolymerized film electrode was electrochemically superior to the PMEL/fMWCNT/GCE film electrode but was inferior to the PANI/fMWCNT/GCE film electrode.

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Electrode materials for electrochemical capacitors based on poly(3,4 ethylenedioxythiophene) and functionalized multi-walled carbon nanotubes characterized in aqueous and aprotic electrolytes

Cited by 12 publications

References 61 publications

Development of Microstructured Carbon Coatings by Substrate-Catalytic CVD

Development of Microstructured Carbon Coatings by Substrate-Catalytic CVD

Three-Dimensional Architectures in Electrochemical Capacitor Applications – Insights, Opinions, and Perspectives

Properties of electrochemically copolymerized aniline and melamine on functionalized multiwalled‐carbon nanotube film electrodes

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