Electrochemical codeposition of nickel oxide and polyaniline

Abstract

The morphologies and elemental components of the films were inspected by Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Diffraction (EDX). The stability of nickel oxide in the films was found to be enhanced against acidic environments. Electrochemical catalytic behavior of NiO x within the composite film was conserved and demonstrated by catalytic oxidation of methanol and ethanol.

Physioelectrochemical and DFT investigation of metal oxide/p-type conductive polymer nanoparticles as an efficient catalyst for the electrocatalytic oxidation of methanol

“…the methanol concentration dependency of R ct are further tted to eqn (25) to estimate the values of the rate constants. From this equation values of the rate constants k 1 ¼ 3.86 s À1 , k À1 ¼ 0.31 s À1 and k 2 ¼ 1.24 Â 10 3 cm 3 mol À1 s À1 have been calculated.…”

“…The use of alkaline solutions in a fuel cell has many advantages such as increasing its efficiency, 4,5 a wider selection of possible electrode materials, a higher efficiency of both anodic and cathodic processes, almost no sensitivity to the surface structure 6 and negligible poisoning effects in alkaline solutions were observed. [24][25][26][27][28][29][30][31] Moreover, the possibility of dispersing metallic particles inside the polymers gives electrodes with higher surface areas, enhanced electrocatalytic activities and facilitates electron transfer due to semiconducting properties 29 and a change in the Fermi level towards the oxidation of organic molecules. As described previously, 9,10 a considerable increase in power density and fuel utilization was obtained by optimizing different components of fuel cells.…”

The role of (photo)electrochemistry in the rational design of hybrid conducting polymer/semiconductor assemblies: From fundamental concepts to practical applications

“…Such activity can be synergistically combined with that of the immobilized inorganic NPs, as shown in the following examples. different fuels, such as methanol [251], ethanol [251,252], and also polyhydroxyl compounds [250] were tested on NiO x -containing CP electrodes. In all the cases the M a n u s c r i p t studied, and the Fe 3 O 4 /PPy hybrid showed 7.5 times larger catalytic activity compared to neat PPy [45,46].…”

“…Subsequently, both components, and therefore the hybrid itself is electrogenerated in the same process in one single step. This approach have been exploited to obtain hybrids with PPy, PEDOT, and most importantly PANI; containing Fe 2 O 3[242], MnO 2[243][244][245][246][247][248], MoO 3[249], NiO x[250][251][252], and WO 3[253,254]. The main advantage of this approach is its simplicity and time efficiency.…”

Nano nickel oxide coated graphene/polyaniline composite film with high electrochemical performance for flexible supercapacitor

“…Due to the improvement of conductivity, the film has good electrochemical properties. To further confirm that the NiO addition can improve the properties of PANI, Peng [29] theoretically studied the electrochemical properties of PANI/NiO composites, who believed that the structure and distribution pattern of NiO are critical for effectively improving the specific capacitance of PANI. Although the above studies have confirmed that PANI/NiO has good electrochemical properties, its fabrication as electrode materials with good cycling performance for flexible supercapacitor application has never been reported.…”