Rapid microwave-assisted growth of silver nanoparticles on 3D graphene networks for supercapacitor application

Khamlich, S.; Khamliche, T.; Dhlamini, M.S.; Khenfouch, Mohammed; Mothudi, B.M.; Mâaza, M.

doi:10.1016/j.jcis.2017.01.020

Cited by 56 publications

(38 citation statements)

References 53 publications

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“…Using equation (10), the specific capacitance of silver thin film electrodes were calculated, yielding Specific capacitance of 150.25, 170.12 and 200.41F/g for silver films prepared at sputtering power of 250W, 300W and 350W. The decrease in specific capacitance as sputtering power decreased is due to the less migration of ions to the active areas of the thin film silver electrodes materials, resulting in lower charge storage and hence a low specific capacitance [67][68]. This is inline with the contact angle and morphological analysis, where silver thin film electrodes prepared at higher power, has better wettability and pronounced pores in the microstructural arrangement.…”

Section: Accepted Manuscript 38 Charge -Dischargementioning

confidence: 99%

Electrochemical energy storage of silver and silver oxide thin films in an aqueous NaCl electrolyte

Oje

Ogwu

Mirzaeian

et al. 2018

Journal of Electroanalytical Chemistry

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We present an investigation into the pseudo-capacitive energy storage potential of silver (Ag) and silver oxide (Ag 2 O) thin film electrode materials prepared by reactive magnetron sputtering. The growth mode and morphology of the prepared films were investigated using the scanning electron microscope (SEM), which reveals columnar growth structure and microporous sites. The stoichiometry and oxidation states of the silver oxide films were monitored with X-ray diffraction analysis (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infra-red spectroscopy (FTIR). The XRD results reveal the nanocrystalline nature of the silver and silver oxide thin films with peak intensities indexed at (111) planes. Static and dynamic Contact angle measurements were used to probe the penetration of the aqueous NaCl electrolyte into the pores in the prepared silver and silver oxide films, with surface wettability of all (Ag) and (Ag 2 O) thin films hydrophilic in nature, which is vital for a good electrochemical performance. The Faradaic redox reactions, capacitance and the charge discharge of the films when exposed to the NaCl electrolyte, were monitored with cyclic voltammetry and chronopotentiometry charge-discharge. Results show that Silver and silver oxide

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Section: Accepted Manuscript 38 Charge -Dischargementioning

confidence: 99%

Electrochemical energy storage of silver and silver oxide thin films in an aqueous NaCl electrolyte

Oje

Ogwu

Mirzaeian

et al. 2018

Journal of Electroanalytical Chemistry

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“…The charge and discharge curves were observed to be almost symmetric, exhibiting an ideal capacitive behavior, which is a typical normal characteristic of an ideal capacitor with good electrochemical phenomena. 58,67 The specific capacitance from the galvanostatic chargedischarge curve was calculated using the following eqn (5) reported in the literature: where I is the applied discharge current, Dt is the discharged time, m is the mass on the electrode and DV is the potential window in GCD measurements.…”

Section: Electrochemical Analysis Of Sdcc-niomentioning

confidence: 99%

“…Carbon-based materials such as activated carbon, carbon fibers, carbon nanotubes, and graphene have been used as electrode materials for electric double-layer capacitors (EDLCs) due to high surface area and long cycling life stability. [3][4][5] However, transition-metal oxides such as RuO 2 , MnO 2 , NiO, Co 3 O 4 , ZnO, SnO 2 , and TiO 2 and conducting polymeric materials such as (polyaniline (PANI), polythiophene, and polypyrrole (PPy)) have been used as electrode materials for pseudocapacitors due to their much higher energy storage capacity than carbon-based materials. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] Among transition-metal oxides, nickel oxide/hydroxide with its high theoretical capacitance, environment-friendly nature, high thermal stability, and abundance has been considered as one of the most promising candidates.…”

Section: Introductionmentioning

confidence: 99%

Sucrose-derived carbon-coated nickel oxide (SDCC-NiO) as an electrode material for supercapacitor applications

2020

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“…The superior pseudocapacitive performances could be attributed to its unique structural characteristics [69]. In another study, manganese dioxide (MnO 2 ) was grown in situ on 3D graphene using reverse microemulsion (water in oil method) reaction under ultrasonication.…”

Section: D Graphene-based Supercapacitorsmentioning

confidence: 99%

Advances in research on 2D and 3D graphene-based supercapacitors

Mensing

Poochai

Kerdpocha

et al. 2017

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Graphene-based materials in two-dimensional (2D) and three-dimensional (3D) configurations are promising as electrode materials for supercapacitors due to their large surface area, excellent electrical conductivity, high electrochemical activity and high stability. In this article recent advances in research on 2D and 3D graphene-based materials for supercapacitor electrodes are reviewed extensively in aspects of fabrication methods and electrochemical performances. From the survey, the performance of 2D and 3D graphene-based materials could be significantly enhanced by employing nanostructures of metal oxides, metals and polymers as well as doping graphene with hetero atoms such as nitrogen and boron. In addition, the charge storage performances were found to depend greatly on materials, preparation method and structural configuration. With similar material components, 3D graphene-based networks tended to exhibit superior supercapacitive performances. Therefore, future research should be focusing on further development of 3D graphene-based materials for supercapacitor applications.

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Rapid microwave-assisted growth of silver nanoparticles on 3D graphene networks for supercapacitor application

Cited by 56 publications

References 53 publications

Electrochemical energy storage of silver and silver oxide thin films in an aqueous NaCl electrolyte

Electrochemical energy storage of silver and silver oxide thin films in an aqueous NaCl electrolyte

Sucrose-derived carbon-coated nickel oxide (SDCC-NiO) as an electrode material for supercapacitor applications

Advances in research on 2D and 3D graphene-based supercapacitors

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