Influence of electropolymerization conditions on the morphological and electrical properties of PEDOT film

Cysewska, Karolina; Karczewski, Jakub; Jasiński, Piotr

doi:10.1016/j.electacta.2015.07.006

Cited by 52 publications

(22 citation statements)

References 25 publications

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“…It is worth mentioning that the surface homogeneity of these PEDOT-PSS films contrasts with some literature data. For example, it was reported either a granular aspect when the material is deposited from organic solvents [31] or an aggregated, cauliflower-like, structure when it was deposited from aqueous solutions on gold substrates [32]. The favourable interaction between carbon support and polymer layer seems at the origin of the smoother morphology shown by our samples.…”

Section: Electrochemical Synthesis Of Pedot-pss Filmsmentioning

confidence: 62%

Modulation of the electrocatalytic performance of PEDOT-PSS by reactive insertion into a sol-gel silica matrix

Djelad

Huerta

Morallón

et al. 2018

European Polymer Journal

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Poly(3,4-ethylenedioxythiophene) doped with poly-(styrenesulfonate), PEDOT−PSS, films synthesized by electrochemical methods can be considered as poor electrocatalyst for the oxidation of ferrocene in aqueous solution. The rate of electron transfer to that redox probe decays progressively as the amount of deposited polymer increases and the true electroactive area available for the electrochemical reaction shows quite modest figures. We present here an alternative, simple way to enhance the properties of this material which uses, exclusively, electrochemical synthesis methods. The electrocatalytic performance can be significantly improved by inserting the polymer within a pre-deposited, three-dimensional porous silica matrix forming an interpenetrating hybrid material. On the one hand, the modified PEDOT-PSS shows doping levels which trebles the unmodified material. On the other, the electron transfer constant and the true electroactive are for ferrocene oxidation increased by a factor of 2 and 4, respectively.

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Section: Electrochemical Synthesis Of Pedot-pss Filmsmentioning

confidence: 62%

Modulation of the electrocatalytic performance of PEDOT-PSS by reactive insertion into a sol-gel silica matrix

Djelad

Huerta

Morallón

et al. 2018

European Polymer Journal

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“…Charge storage capacity (CSC) was calculated by integration of the area under the CV curve. Polymer voltammetric capacitance (C cv ) was obtained by dividing the integrated area under theCV curve by two to obtain mean cathodic and anodic capacitance [17]. Electrochemical impedance spectroscopy (EIS) measurements were performed using CH Instruments, Inc. type 660C potentiostat (Austin, TX, USA), in 0.1 M KCl over frequencies ranging from 100 mHz to 10 kHz, with an AC amplitude of 10 mV and a DC potential of 0 V (vs. Ag/AgCl).…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Dopant-Dependent Electrical and Biological Functionality of PEDOT in Bioelectronics

et al. 2021

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The aspiration to interact living cells with electronics challenges researchers to develop materials working at the interface of these two distinct environments. A successful interfacing coating should exhibit both biocompatibility and desired functionality of a bio-integrated device. Taking into account biodiversity, the tissue interface should be fine-tuned to the specific requirements of the bioelectronic systems. In this study, we pointed to electrochemical doping of conducting polymers as a strategy enabling the efficient manufacturing of interfacing platforms, in which features could be easily adjusted. Consequently, we fabricated conducting films based on a poly(3,4-ethylenedioxythiophene) (PEDOT) matrix, with properties modulated through doping with selected ions: PSS− (poly(styrene sulfonate)), ClO4− (perchlorate), and PF6− (hexafluorophosphate). Striving to extend the knowledge on the relationships governing the dopant effect on PEDOT films, the samples were characterized in terms of their chemical, morphological, and electrochemical properties. To investigate the impact of the materials on attachment and growth of cells, rat neuroblastoma B35 cells were cultured on their surface and analyzed using scanning electron microscopy and biological assays. Eventually, it was shown that through the choice of a dopant and doping conditions, PEDOT-based materials can be efficiently tuned with diversified physicochemical properties. Therefore, our results proved electrochemical doping of PEDOT as a valuable strategy facilitating the development of promising tissue interfacing materials with characteristics tailored as required.

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“…A higher surface area was also observed in the case of the higher deposition charge. This can be explained by the fact that a higher deposition charge for the same geometric area of the electrode results in a thicker deposited film [60]. This in turn, led to a higher specific surface area, which could be seen for each studied case in Figure 4a.…”

Section: Xrd Xps and Tem Analysis Of Mn-co-based Nanofilmmentioning

confidence: 79%

“…The EIS data were fitted with the Zview software. The double layer capacitance (C dl ) was determined based on the cyclic voltammetry (CV) performed by sweeping the potential across the non-faradaic region from 0.15 V to 0.25 V vs. Ag/AgCl at different scan rates (10,20,40,60,80, 100 mV•s −1 ) in an aqueous solution of 1 M KOH ( Figure S1a,c,e, Supplementary content). The CV allowed for the determination of C dl based on the following equation…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

The Influence of the Electrodeposition Parameters on the Properties of Mn-Co-Based Nanofilms as Anode Materials for Alkaline Electrolysers

et al. 2020

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In this work, the influence of the synthesis conditions on the structure, morphology, and electrocatalytic performance for the oxygen evolution reaction (OER) of Mn-Co-based films is studied. For this purpose, Mn-Co nanofilm is electrochemically synthesised in a one-step process on nickel foam in the presence of metal nitrates without any additives. The possible mechanism of the synthesis is proposed. The morphology and structure of the catalysts are studied by various techniques including scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. The analyses show that the as-deposited catalysts consist mainly of oxides/hydroxides and/or (oxy)hydroxides based on Mn2+, Co2+, and Co3+. The alkaline post-treatment of the film results in the formation of Mn-Co (oxy)hydroxides and crystalline Co(OH)2 with a β-phase hexagonal platelet-like shape structure, indicating a layered double hydroxide structure, desirable for the OER. Electrochemical studies show that the catalytic performance of Mn-Co was dependent on the concentration of Mn versus Co in the synthesis solution and on the deposition charge. The optimised Mn-Co/Ni foam is characterised by a specific surface area of 10.5 m2·g−1, a pore volume of 0.0042 cm3·g−1, and high electrochemical stability with an overpotential deviation around 330–340 mV at 10 mA·cm−2geo for 70 h.

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Influence of electropolymerization conditions on the morphological and electrical properties of PEDOT film

Cited by 52 publications

References 25 publications

Modulation of the electrocatalytic performance of PEDOT-PSS by reactive insertion into a sol-gel silica matrix

Modulation of the electrocatalytic performance of PEDOT-PSS by reactive insertion into a sol-gel silica matrix

Dopant-Dependent Electrical and Biological Functionality of PEDOT in Bioelectronics

The Influence of the Electrodeposition Parameters on the Properties of Mn-Co-Based Nanofilms as Anode Materials for Alkaline Electrolysers

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