Graphene-Based Nanolayers Toward Energy Storage Device

Ahmed, Mahmoud M.; Imae, Toyoko

doi:10.1016/b978-0-444-63739-0.00010-4

Cited by 10 publications

(9 citation statements)

References 279 publications

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“…Using an unpaired student t-test, there was a significant difference in the C dl values of the S1 electrode when compared to the S2 electrode (p < 0.05). Several factors affect the C dl of the electrode at the interface, such as surface functionality and composition, the geometric surface area of the electrode, surface roughness, and electroactive surface area [22]. However, it is suggested that two main factors can be attributed to this data pattern.…”

Section: Effect Of CV Scan Rates On the Double-layer Capacitance (C Dl )mentioning

confidence: 99%

Recycling Chocolate Aluminum Wrapping Foil as to Create Electrochemical Metal Strip Electrodes

et al. 2020

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The development of low-cost electrode devices from conductive materials has recently attracted considerable attention as a sustainable means to replace the existing commercially available electrodes. In this study, two different electrode surfaces (surfaces 1 and 2, denoted as S1 and S2) were fabricated from chocolate wrapping aluminum foils. Energy dispersive X-Ray (EDX) and field emission scanning electron microscopy (FESEM) were used to investigate the elemental composition and surface morphology of the prepared electrodes. Meanwhile, cyclic voltammetry (CV), chronoamperometry, electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV) were used to assess the electrical conductivities and the electrochemical activities of the prepared electrodes. It was found that the fabricated electrode strips, particularly the S1 electrode, showed good electrochemical responses and conductivity properties in phosphate buffer (PB) solutions. Interestingly, both of the electrodes can respond to the ruthenium hexamine (Ruhex) redox species. The fundamental results presented from this study indicate that this electrode material can be an inexpensive alternative for the electrode substrate. Overall, our findings indicate that electrodes made from chocolate wrapping materials have promise as electrochemical sensors and can be utilized in various applications.

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Section: Effect Of CV Scan Rates On the Double-layer Capacitance (C Dl )mentioning

confidence: 99%

Recycling Chocolate Aluminum Wrapping Foil as to Create Electrochemical Metal Strip Electrodes

et al. 2020

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“…Supercapacitors (SCs) are devices for storing electrochemical energy with both exceptional power and energy densities as well as a long lifecycle and high charging/discharging rates 1 . Based on the specific energy storage mechanism, SCs are mostly categorized into two groups as pseudocapacitors and electrical double layer capacitors (EDLCs) 2,3 . EDLCs basically store the charge at electrode and electrolyte interface in an electrostatic manner whereas pseudocapacitors store the energy by Faradic reactions ().…”

Section: Introductionmentioning

confidence: 99%

“…Graphene has extraordinary properties such as porosity, large specific area, high mechanical strength, enhanced conductivity, and electrochemically active structure. Thus, graphene and its derivatives have promising potential for wide range of areas including electronics, catalysis, energy storage, and so forth 3‐20 …”

Section: Introductionmentioning

confidence: 99%

“…1 Based on the specific energy storage mechanism, SCs are mostly categorized into two groups as pseudocapacitors and electrical double layer capacitors (EDLCs). 2,3 EDLCs basically store the charge at electrode and electrolyte interface in an electrostatic manner whereas pseudocapacitors store the energy by Faradic reactions (2).…”

Section: Introductionmentioning

confidence: 99%

“…Thus, graphene and its derivatives have promising potential for wide range of areas including electronics, catalysis, energy storage, and so forth. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] While the electrochemical performance of graphene based SCs has been studied comprehensively in various aqueous electrolytes including H 2 SO 4 and KOH, [21][22][23][24][25][26][27] limited studies have used organic electrolytes. 28,29 Although the aqueous electrolytes are highly ionic conductive, environmentally friendly, and cost-effective, they have limited operating potential because of water electrolysis.…”

Section: Introductionmentioning

confidence: 99%

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Excellent cyclic stability of symmetric and asymmetric supercapacitors constructed by graphene deposited Cu and Ni electrodes

Yargı

Ozmen

Buyukpehlivan

et al. 2022

Intl J of Energy Research

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Summary Supercapacitors (SC) with ionic liquid bis(trifluoromethanesulfonyl)imide (TFMS) trapped polyacrylamide (PAAM) hydrogel separator between graphene deposited nickel and copper foam electrodes were designed and assembled in CR2032 coin cell. The symmetric and asymmetric SCs were named as G‐NiF/G‐NiF, G‐CuF/G‐CuF, and G‐NiF/G‐CuF where G‐NiF, and G‐CuF stands for graphene deposited nickel foam and copper foam, respectively. The best electrochemical performance was obtained for G‐NiF/G‐NiF in terms of higher energy, power, and current densities from the galvanostatic charge‐discharge (GCD) and CV curves. Specific capacitances of G‐CuF/G‐CuF, G‐NiF/G‐NiF, and G‐NiF/G‐CuF SCs were found as 8.3, 9.8, and 10.4 F g−1 at 0.5 mA, respectively. Capacitance retention of both G‐NiF/G‐NiF and G‐NiF/G‐CuF SCs does not change and reveals excellent performance of 100% up to 5000 cycles indicating long term stability in SCs applications.

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Nanocomposites of PEDOT:PSS with Graphene and its Derivatives for Flexible Electronic Applications: A Review

Adekoya

Sadiku

Ray

2021

Macro Materials & Eng

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Rapid technological advancements in flexible nanoelectronics have fueled the need for high‐performance materials with advanced structural architectures and superior properties. In this regard, conducting polymer nanocomposites are at the forefront of current innovative research owing to their excellent properties. Among these sets of unique materials, poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonic acid) (PEDOT:PSS) nanocomposites continue to pave the way in several applications including those entailing thermoelectricity, transparent electrodes, photovoltaics, technical coatings, lighting, sensing, bioelectronics, hole transport layers, interconnectors, electroactive layers, and motion‐sensing conductors. The versatility and intriguing properties of these composites, particularly with 2D nanomaterials, have garnered significant attention from academia as well as industry. Therefore, in this review, the latest developments in PEDOT:PSS nanocomposites with graphene and its derivatives are focused on. First, the synthesis and fabrication of PEDOT:PSS nanocomposites with emphasis on recent techniques developed to overcome the challenges associated with direct production is discussed. Thereafter, the characterization and thermoelectric properties of the materials are explained. This provides detailed insights into the characteristic features of various nanocomposites and the influence of individual nanoparticles in the PEDOT:PSS matrix. Then, a conclusion, including a critical summary of the extensive applications of the PEDOT:PSS/graphene nanocomposites for electrochemical, electrostatic, optoelectronic, and thermoelectric devices, is provided.

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Graphene-Based Nanolayers Toward Energy Storage Device

Cited by 10 publications

References 279 publications

Recycling Chocolate Aluminum Wrapping Foil as to Create Electrochemical Metal Strip Electrodes

Recycling Chocolate Aluminum Wrapping Foil as to Create Electrochemical Metal Strip Electrodes

Excellent cyclic stability of symmetric and asymmetric supercapacitors constructed by graphene deposited Cu and Ni electrodes

Nanocomposites of PEDOT:PSS with Graphene and its Derivatives for Flexible Electronic Applications: A Review

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