Electrosynthesis, optical modeling and electrocatalytic activity of Ni-MWCNT-PT nanocomposite film

Journal of Electrochemical Science and Technology

Jafarian

et al. 2015

In this study we investigated the electrocatalytic oxidation of saccharose on conductive polymer-Nickel oxide modified graphite electrodes based on the ability of anionic surfactants to form micelles in aqueous media. This NiO modified electrode showed higher electrocatalytic activity than Ni rode electrode in electrocatalytic oxidation of saccharose. The anodic peak currents show linear dependency with the square root of scan rate. This behavior is the characteristic of a diffusion controlled process. Under the CA regime the reaction followed a Cottrellian behavior and the diffusion coefficient of saccharose was found in agreement with the values obtained from CV measurements.

Section: Nfadsupporting

confidence: 53%

Physioelectrochemical Investigation of Electrocatalytic Oxidation of Saccharose on Conductive Polymer Modified Graphite Electrode

Naeemy

Journal of Electrochemical Science and Technology

Jafarian

et al. 2015

“…One of the most important parameters for practical application is cycling stability. the straight line indicates a capacitive behavior related to the charging mechanism [29][30][31][32][33][34]. No obvious semicircle was observed at the frequency range, this suggests that the electron transfer resistance can be neglected, because of the high conductivity [35].…”

Section: Resultsmentioning

confidence: 91%

Facile electrosynthesis of nano flower like metal-organic framework and its nanocomposite with conjugated polymer as a novel and hybrid electrode material for highly capacitive pseudocapacitors

Naseri

Fotouhi

Journal of Colloid and Interface Science

et al. 2016

Self Cite

The [Cu(btec)DMF] (Hbtec=1,2,4,5-benzenetetracarboxylate acid) was electrosynthesized on the graphite working electrode by applying catholic potential. The [Cu(btec)DMF] grows on a graphite surface which results from the coordination of 1,2,4,5-benzenetetracarboxylate anions with Cu cations. The electrosynthesized [Cu(btec)DMF] was characterized by X-ray diffraction, scanning electron microscopy. Furthermore, POAP/Cu(btec)DMF nanocomposite film electrosynthesized on the surface of the carbon paste electrode by cyclic voltammetry. Different electrochemical methods including galvanostatic charge-discharge experiments, cyclic voltammetry and electrochemical impedance spectroscopy are carried out in order to investigate the performance of the system. This work introduces new nanocomposite materials for electrochemical redox capacitors with advantages including ease synthesis, high active surface area and stability in an aqueous electrolyte.

“…Conductive polymers, possessing porous nanostructures, low resistance, high stability, excellent poisoning tolerance along with high accessible surface areas, are advantageous as matrix to improve the stability of metal nanoparticles in fuel cells through dispersing metal nanoparticles and preventing metallic agglomeration. [53][54][55][56][57][58][59][60][61][62][63][64] Furthermore, it is worth mentioning that conductive polymer-supported Pt catalysts represent strong tolerance to poisoning species arising from their synergistic effect with Pt. [65][66][67] Among various conductive polymers, poly(3,4-ethylenedioxythiophene) (PE-DOT) is considered so effective for the incorporation into graphene sheets, arising from not only its high electrical conductivity but also superb stability in comparison with other conductive polymers.…”

Section: Graphene/polymer/metal Nanoparticles Hybridsmentioning

confidence: 99%

Electrocatalytic Oxidation of Ethanol on the Surface of Graphene Based Nanocomposites: An Introduction and Review to it in Recent Studies

Heidari

Asgari

2019

The Chemical Record

This review gives an overview of the electrochemical investigations about the properties of various types of graphene composites in the ethanol oxidation. Various routes to provide appropriate graphene‐based materials required electrochemical techniques for investigation of different types of the materials as well as their performance and efficacy in ethanol oxidation are discussed in detail. Furthermore, it is demonstrated that the incorporation of suitable materials, e. g. noble metals (graphene‐supported binary and ternary metal nanoparticles), metal oxides, conductive polymer, etc, with graphene results in excellent electrocatalytic activity, superb durability and selectivity in ethanol oxidation. Immobilization of electrocatalytically active NPs on graphene supports using physical approaches is considered as an effective route to prepare direct ethanol fuel cell (DEFC) anode catalysts.