Emerging ternary nanocomposite of rGO draped palladium oxide/polypyrrole for high performance supercapacitors

Jose, Jemini; Prasankumar, Thibeorchews; Shaji, Sadasivan; Pillai, Saju; B, Sreeja P.

doi:10.1016/j.jallcom.2020.157481

Cited by 38 publications

(17 citation statements)

References 58 publications

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“…Metal oxides have always been salient materials that are extensively applicable in different fields, like catalysis, energy storage and conversion, biomedicine, and sensors [14,15]. Nanostructured metal oxides have attracted tremendous interest in recent years because of their unique physical and chemical properties while the morphological and structural size became down to the nanoscale level [16]. There are lot of metal oxide nanostructures, ranging from nanoparticles, nanowires, nanotubes, and nanoporous structures.…”

Section: Introductionmentioning

confidence: 99%

Pseudocapacitors

Prasankumar¹,

Jose²,

Sreeja³

2022

Supercapacitors for the Next Generation

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World energy consumption has grown at a rate of knots. Economic growth, increasing prosperity and urbanization, the rise in per capita consumption, and the spread of energy access are the factors likely to considerably increase the total energy demand. In order to meet both the environmental and economic challenges, society realizes the necessity for harvesting the renewable resources, their storage, and recovery. To achieve accelerating clean energy innovation, cost reduction, and deployment of many clean energy technologies, it is important to formulating policies and their implementation, programmes for the development of new and renewable energy apart from coordinating and intensifying R&D in the sector. At present, aggravating energy and environmental issues, such as fossil fuel depletion, pollution problems, and global warming are ringing alarm bells to humans. Thus, there is an urgent need for enhanced energy security along with reducing greenhouse gas emissions. In this direction, renewable energy is one of the environmentally friendly sources of energy and effectiveness of growing economy of the whole world in general. The development of environmentally friendly materials is one of the key issues today.

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Section: Introductionmentioning

confidence: 99%

Pseudocapacitors

Prasankumar¹,

Jose²,

Sreeja³

2022

Supercapacitors for the Next Generation

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“…Among various heteroatom doping, nitrogen doping is widely utilized to employ doping of GO. This is because of the easiness of manipulating GO to improve more active sites for fuel cell, biosensing, adsorption, supercapacitor, and solar cell applications 5 , 6 . Nitrogen doping of GO creates different kinds of nitrogen such as pyrrolic-N, pyridinic-N, and graphitic-N in the GO lattice, which enrich the electronic properties of GO 7 , 8 .…”

Section: Introductionmentioning

confidence: 99%

“…At present, different methods such as plasma treatment, segregation growth, chemical vapour deposition, and arc discharge method have been developed for the synthesis of nitrogen-doped GO. However, the practical applications of these methods are limited due to high and complex reaction temperature conditions 6 . Hence simple organic compounds with amino groups like urea, melamine, glycine, and hydroxyl amine are utilized to achieve nitrogen doping.…”

Section: Introductionmentioning

confidence: 99%

An electrochemical sensor for nanomolar detection of caffeine based on nicotinic acid hydrazide anchored on graphene oxide (NAHGO)

Jose

Subramanian

Shaji

et al. 2021

Sci Rep

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A simple modified sensor was developed with nicotinic acid hydrazide anchored on graphene oxide (NAHGO), by ultrasonic-assisted chemical route, using hydroxy benzotriazole as a mediator. Structural and morphologies of NAHGO samples were investigated in detail by Fourier-Transform Infrared spectroscopy (FT-IR), Powder X-ray diffraction (P-XRD), Raman spectroscopy, Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Thermogravimetric analysis (TGA). The detailed morphological examination and electrochemical studies revealed the delaminated sheet with the tube-like structure of NAHGO provided the route for more electroactive surface which influenced the electrooxidation of caffeine with increased current. The electrochemical behaviour of NAHGO on a glassy carbon electrode (GCE) for caffeine detection was demonstrated by employing voltammetric techniques. The influence of scan rate, pH, and concentration on caffeine's peak current was also studied. The NAHGO sensor was employed for the determination of caffeine in imol plus and energy drinks. The detection limit determined was 8.7 × 10–9 M, and the best value was reported so far. The results show that NAHGO modified electrodes are one of the best preferences to establish new, efficient, and reliable analytical tools for the detection of caffeine.

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“…Supercapacitors owing to their long cycle life, high power density, and great reversibility, are the most investigated energy storage devices. Based on the charge/discharge mechanisms, these devices are divided into pseudocapacitors and electrical doublelayer capacitors (EDLCs) [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Fabrication, characterization, and application of polyaniline/Ni(II) metal-organic frameworks nanocomposite as a supercapacitor electrode material

Ansari-Asl

2021

Preprint

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Metal-organic frameworks (MOFs), owing to their tunable porosity, high surface area, and diversity were investigated as potential supercapacitor materials. PANI/Ni-MOF, a nanocomposite of Ni-MOF and polyaniline (PANI), was fabricated by in situ solvothermal synthesis of Ni-MOF in the presence of the as-obtained PANI. The prepared products were studied using FT-IR, PXRD, SEM, and EDS-mapping techniques. EDS-mapping results exhibited the uniform dispersion of Ni-MOF into the polymeric matrix. Electrochemical properties of the pure Ni-MOF and PANI/Ni-MOF were investigated through CV (cyclic voltammetry), GCD (galvanostatic charge/discharge), and EIS (electrochemical impedance spectroscopy) methods in a three-electrode system. The as-fabricated PANI/Ni-MOF nanocomposite exhibited outstanding electrochemical performance owing to the synergistic effects of PANI with proper conductivity and the Ni-MOF’s porous structure, obtaining an excellent specific capacitance of 601 F g− 1 at 1 A g− 1. Additionally, this supercapacitor material showed a remarkable cycle life after 5000 charge/discharge test, 99.5 % retention of its specific capacitance. These excellent properties would make PANI/Ni-MOF nanocomposite as a proper candidate for supercapacitor electrode material. .

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Emerging ternary nanocomposite of rGO draped palladium oxide/polypyrrole for high performance supercapacitors

Cited by 38 publications

References 58 publications

Pseudocapacitors

Pseudocapacitors

An electrochemical sensor for nanomolar detection of caffeine based on nicotinic acid hydrazide anchored on graphene oxide (NAHGO)

Fabrication, characterization, and application of polyaniline/Ni(II) metal-organic frameworks nanocomposite as a supercapacitor electrode material

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