New insights into chemical and electrochemical functionalization of graphene oxide electrodes by o-phenylenediamine and their potential applications

Sačer, Denis; Spajić, Ivan; Roković, Marijana Kraljić; Mandić, Zoran

doi:10.1007/s10853-018-2693-6

Cited by 11 publications

(4 citation statements)

References 85 publications

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“…It is well known that an ideal capacitor should retain a constant current during CV scans according to the relation I(t) = C (dU / dt), where I is the current, U is the voltage and t is the time [74]. Thus, the CV curves of all supercapacitors are characterised by a good capacitive, almost rectangular CV shape [75][76][77]. For the SC2 and SC5 the lowest current values were obtained.…”

Section: Electrochemical Performances Of Pedot Electrodesmentioning

confidence: 99%

High-Performance Supercapacitors Utilising PEDOT Composite Electrodes; Synthesis, Characterisation and Electrochemical Performance Analysis

Ljubek,

Roković

2024

Preprint

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The aim of this work was to prepare poly(3,4-ethylenedioxythiophene) (PEDOT) electrodes from an electrolyte containing graphene oxide (GO) and sodium dodecyl sulphate (SDS) (PEDOT/GO/SDS) or poly(4-styrene sulphonate) (PSS) (PEDOT/GO/PSS) solutions. The synthesis was also carried out without GO presence (PEDOT/SDS, PEDOT/PSS). PEDOT and PEDOT/GO were synthesised at glassy carbon support, while PEDOT/GO-R was synthesised at GO support, all were prepared by applying 1.0 V vs. SCE during 300 s. After PEDOT synthesis, the electrode with GO support was additionally polarised at -1.4 V vs. SCE in 0.1 mol dm− 3 KCl solution for 600 s, to obtain reduced graphene oxide (rGO). In this way, PEDOT/GO/SDS-R and PEDOT/GO/PSS-R electrodes were prepared. Prepared electrodes were used to assemble symmetric supercapacitors tested by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The stability of the supercapacitors was determined by charging/discharging at constant current during 1000 cycles, and the specific capacitance (Cs), energy (Ws) and power (Ps) were calculated. The presence of GO in synthesis solution or as support decreased synthesis rate and resulted in a more compact layer with a lower specific capacitance value. However, the successful reduction of GO resulted in a significant improvement of capacitive properties, making this electrode suitable for high-energy applications.

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Section: Electrochemical Performances Of Pedot Electrodesmentioning

confidence: 99%

High-Performance Supercapacitors Utilising PEDOT Composite Electrodes; Synthesis, Characterisation and Electrochemical Performance Analysis

Ljubek,

Roković

2024

Preprint

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“…22 Poly ortho-phenylenediamine (PoPD) has shown an excellent cycling stability as electrode for supercapacitors and a great promise for developing PoPD-based nanocomposite with carbon nanomaterials, 25 which could provide enhanced properties for energy storage devices. For instance, Sacer et al 26 have studied the electroactivity of GO/PoPD composite by EQCM. The results showed an improvement of the electrochemical properties of the composite compared to the PoPD alone.…”

Section: Introductionmentioning

confidence: 99%

Interfacial charge storage mechanisms of composite electrodes based on poly(ortho-phenylenediamine)/carbon nanotubes via advanced electrogravimetry

Halim

Demir‐Cakan

Perrot

et al. 2022

The Journal of Chemical Physics

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To reach a deeper understanding of the charge storage mechanisms of electrode materials is one of the challenges towards improving its energy storage performance. Herein, we investigate the interfacial ion exchange of a composite electrode made of carbon nanotube/poly( ortho-phenylenediamine) (CNT/P oPD) in a 1M NaCl aqueous electrolyte via advanced electrogravimetric analyses based on electrochemical quartz crystal microbalance (EQCM). Classical EQCM at different scan rates of the potential revealed the complex electrogravimetric behavior, likely due to multi-species participation at different temporal scales. Thereafter, in order to better understand the behavior of each species (ion, counter ion, co-ions) in the charge compensation mechanism, the electrogravimetric impedance spectroscopy analysis (also called ac-electrogravimetry) was pursued. Ac-electrogravimetry revealed the role of each species where Na+ cations, Cl- anions as well as protons participate in the charge compensation mechanism of the CNT/P oPD composite, with different kinetics and proportions. The water molecules, with opposite flux direction with the cations, are also detected suggesting their exclusion during cationic species transfer. Having analyzed ac-electrogravimetry responses in depth, the positive synergistic interaction between the CNT and the P oPD is highlighted, revealing the improved accessibility of species to new sites in the composite.

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“…In the field of anticorrosion, conductive polymers have broad application prospects in ferrous and nonferrous materials 4–9 . In other aspects have also been widely concerned like sensor and battery 10–12 . The conductive polymers are used as coatings or inhibitors to protect metal substrates in corrosive media.…”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6][7][8][9] In other aspects have also been widely concerned like sensor and battery. [10][11][12] The conductive polymers are used as coatings or inhibitors to protect metal substrates in corrosive media. Researchers also believe that the structural properties of polymers have a certain relationship with corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of poly(o‐phenylenediamine) polymer film on stainless steel as a corrosion protection layer

Zhang

Liu

2021

J of Applied Polymer Sci

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The concept of green chemistry is promoted by more fields. Therefore, it is necessary for the preparation of organic film under the gentle polymerization condition. In this article, the traditional strong acid polymerization electrolyte is replaced by a citric acid‐disodium hydrogen phosphate buffer system (pH 5.6). On the one hand, it reduces the negative effects of strong acid, and on the other hand, it avoids the damage of the metal substrate during the polymerization process. In addition, with o‐phenylenediamine (oPD) as the monomer, poly(oPD) (PoPD) films were successfully prepared by cyclic voltammetry under this system. The effects of concentration, temperature, and immersion time were investigated in 3.5% NaCl solution. It is found that temperature has a negative effect on the corrosion resistance of the coating. But when the temperature rises to 333 K, the resistance of the PoPD film is still five times higher than that of bare steel. The immersion test showed that when the film was immersed for 21.5 h, the impedance of the PoPD film was an order of magnitude larger than that of the bare steel that was impregnated at the same time. This research can provide new ideas for organic film in daily industrial production.

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New insights into chemical and electrochemical functionalization of graphene oxide electrodes by o-phenylenediamine and their potential applications

Cited by 11 publications

References 85 publications

High-Performance Supercapacitors Utilising PEDOT Composite Electrodes; Synthesis, Characterisation and Electrochemical Performance Analysis

High-Performance Supercapacitors Utilising PEDOT Composite Electrodes; Synthesis, Characterisation and Electrochemical Performance Analysis

Interfacial charge storage mechanisms of composite electrodes based on poly(ortho-phenylenediamine)/carbon nanotubes via advanced electrogravimetry

Green synthesis of poly(o‐phenylenediamine) polymer film on stainless steel as a corrosion protection layer

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