Optical properties, electrochemical analysis and corrosion resistance studies of polyaniline/reduced graphene Oxide/ZrO2 for supercapacitor application

Sinha, Sayantan; Singh, W. Ishwarchand; Nongthombam, Sumitra; Devi, Naorem Aruna; Laha, Soumyadeep; Swain, Bhabani Sankar; Swain, Bibhu P.

doi:10.1016/j.jpcs.2021.110478

Cited by 39 publications

(11 citation statements)

References 32 publications

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“…The optical absorbance of the pristine PPy and PPy/NiO x nanocomposite films is shown in Figure 4A. It is observed that the spectrum of PPy exhibit two absorption bands located at ~325 and 368 nm corresponding to the π → π* transition in benzenoid rings of the PPy 38 . Further, the PPy also has strong bipolaron absorptions at ~465 nm, revealing the conducting PPy.…”

Section: Resultsmentioning

confidence: 99%

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Facile fabrication of polypyrrole/NiO_x core‐shell nanocomposites for hydrogen production from wastewater

Negm

Abdeltwab

Rabia

et al. 2023

Polymers for Advanced Techs

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This work highlights testing the polymer nanocomposite for hydrogen gas production from wastewater (sewage water). The in-situ polymerization technique is used to prepare polypyrrole (PPy) and PPy/NiO x nanocomposite films on a glass substrate. The film's ability to generate hydrogen from sewage water is then evaluated. The XRD and XPS confirmed the formation of two types of NiO X : NiO and Ni 2 O 3 . The optical property of the composite is greater than the polymer under the insertion of NiO x as a core for the polymer coating shell, in which the band gap values are 2.25 and 1.81 eV, respectively. The TEM confirmed the PPy/NiO x core-shell formation, in which the polymer shell (20 nm) coated the NiO X core (170 nm). The electrochemical testing for H 2 gas production is carried out through a three-electrode cell. The effect of light on/off, wavelengths, and temperature on the H 2 production is applied. Under

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Section: Resultsmentioning

confidence: 99%

“…π* transition in benzenoid rings of the PPy. 38 Further, the PPy also has strong bipolaron absorptions at $465 nm, revealing the conducting PPy. The broad peak that begins at 727 nm is the electron transition of the conjugated PPy chain from suitable for optoelectronic devices.…”

Section: Structural and Optical Analysesmentioning

confidence: 99%

Facile fabrication of polypyrrole/NiO_x core‐shell nanocomposites for hydrogen production from wastewater

Negm

Abdeltwab

Rabia

et al. 2023

Polymers for Advanced Techs

View full text Add to dashboard Cite

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“…A few works addressed different degradation issues focusing on active materials, including degradation studies of RuO 2 , [215] magnetron sputtered ZrN, [216] MoO 3 -RuO 2 , [217] PAni-rGO-ZrO 2 , [218] thin GR covered nanostructured Si [219] and nanoporous Ni-NiO core-shell electrode. [220]…”

Section: Othersmentioning

confidence: 99%

Corrosion and Materials Degradation in Electrochemical Energy Storage and Conversion Devices

Saji

2023

ChemElectroChem

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Research and development on electrochemical energy storage and conversion (EESC) devices, viz. fuel cells, supercapacitors and batteries, are highly significant in realizing carbon neutrality and a sustainable energy economy. Component corrosion/ degradation remains a major threat to EESC device's long-term durability. Here, we provide a comprehensive account of the EESC device's corrosion and degradation issues. Discussions are mainly on polymer electrolyte membrane fuel cells, metal-ion and metal-air batteries and supercapacitors. Corrosion of bipolar plates/current collectors, carbon corrosion, electrode/ electrocatalyst degradation, and various mitigation approaches are detailed. The collective information provided could help develop EESC devices with better durability.

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“…The optical Band gap is calculated by using Tauc method, which is based on the assumption that the energy depends on the absorption coe cient of the materials with the help of the following equation [20]: Equation 1Where α is the absorption coe cient of the material, h is the universal Planck's constant, ϑ is the frequency of photons, is the energy of optical band gap, and B is an arbitrary constant. The γ factor depends on the nature of the electronic transitions and having values or 2 for the direct and indirect transition optical band gaps, respectively [20][21][22].…”

Section: Calculation Of Optical Band Gapmentioning

confidence: 99%

Synthesis and Characterization of a New Gold Nanoparticles decorated functionalized Carbon Nanotubes Hybrid Nanofillers reinforced Polyaniline Ternary Nanocomposites: Thermal, Dielectric, and Sensing Properties

Shubhadarshinee

Mohapatra

Jali

et al. 2022

Preprint

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The present study deals with the synthesis of gold nanoparticles (AuNPs) reinforced functionalized single-walled carbon nanotubes (f-SWNTs)/multi-walled carbon nanotubes (f-MWNTs) based polyaniline (PANI) ternary nanocomposites, using in situ polymerization process to analyze the thermal, dielectric and sensing properties. The chemical interaction and nanostructure characteristics of the synthesized nanocomposites are studied using ultraviolet-visible (UV-Vis) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, X-ray diffraction (XRD) analysis, and X-ray photoelectron spectroscopy (XPS). The morphological characterizations of the nanocomposites are investigated by scanning electron microscopy (SEM) and field emission scanning electron microscopy (FESEM). The dispersion stability and average size distribution of the nanocomposites are examined by means of dynamic light scattering (DLS) technique. The thermal and dielectric properties of the nanocomposites are carried out by using thermogravimetry-differential scanning calorimetry (TG-DSC) and dielectric relaxation spectroscopy (DRS), respectively. The sensing behavior of the nanocomposites is analyzed through UV-Vis spectroscopy. The thermal, dielectric, and sensing properties of the Au@f-SWNTs and Au@f-MWNTs nanohybrids embedded PANI ternary nanocomposite is significantly increased due to the strong interfacial interactions originated between the hybrid nanofiller and PANI matrix.

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Optical properties, electrochemical analysis and corrosion resistance studies of polyaniline/reduced graphene Oxide/ZrO2 for supercapacitor application

Cited by 39 publications

References 32 publications

Facile fabrication of polypyrrole/NiO_x core‐shell nanocomposites for hydrogen production from wastewater

Facile fabrication of polypyrrole/NiO_x core‐shell nanocomposites for hydrogen production from wastewater

Corrosion and Materials Degradation in Electrochemical Energy Storage and Conversion Devices

Synthesis and Characterization of a New Gold Nanoparticles decorated functionalized Carbon Nanotubes Hybrid Nanofillers reinforced Polyaniline Ternary Nanocomposites: Thermal, Dielectric, and Sensing Properties

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Optical properties, electrochemical analysis and corrosion resistance studies of polyaniline/reduced graphene Oxide/ZrO2 for supercapacitor application

Cited by 39 publications

References 32 publications

Facile fabrication of polypyrrole/NiOx core‐shell nanocomposites for hydrogen production from wastewater

Facile fabrication of polypyrrole/NiOx core‐shell nanocomposites for hydrogen production from wastewater

Corrosion and Materials Degradation in Electrochemical Energy Storage and Conversion Devices

Synthesis and Characterization of a New Gold Nanoparticles decorated functionalized Carbon Nanotubes Hybrid Nanofillers reinforced Polyaniline Ternary Nanocomposites: Thermal, Dielectric, and Sensing Properties

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Facile fabrication of polypyrrole/NiO_x core‐shell nanocomposites for hydrogen production from wastewater

Facile fabrication of polypyrrole/NiO_x core‐shell nanocomposites for hydrogen production from wastewater