Introduction to Supercapacitors

Nigam, Ravi; Sinha, Prerna; Kar, Kamal K.

doi:10.1007/978-3-030-68364-1_1

Cited by 11 publications

(5 citation statements)

References 77 publications

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“…Guan et al have explained the pseudocapacitance based on the equivalence of semiconductor band theory . Costentin et al have also stated that the faradaic reactions lead to the formation of conduction bands involved in the ohmic conduction potential domains in pseudocapacitance. , Figure g shows the Haar wavelet smoothed maximum interfacial potential with respect to the electrode thickness. Sinc and square of sinc function representations are possible from the Fourier transform of rectangular and triangular relations between a maximum potential at interfacial electrode sphere and electrode thickness.…”

Section: Results and Discussionmentioning

confidence: 99%

Effect of Mixed Morphology (Simple Cubic, Face-Centered Cubic, and Body-Centered Cubic)-Based Electrodes on the Electric Double Layer Capacitance of Supercapacitors

Nigam,

Kar

2024

Langmuir

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Supercapacitors store energy due to the formation of an electric double layer (EDL) at the interface of the electrodes and electrolyte. The present article deals with the finite element study of equilibrium electric double layer capacitance (EDLC) in the mixed morphology electrodes comprising all three fundamental crystal structures, simple cubic (SC), body-centered cubic (BCC), and face-centered cubic morphologies (FCC). Mesoporous-activated carbon forms the electrode in the supercapacitor with (C 2 H 5 ) 4 NBF 4 /propylene carbonate organic electrolyte. Electrochemical interference is clearly demonstrated in the supercapacitors with the formation of the potential bands, as in the case of interference theory due to the increasing packing factor. The effects of electrode thickness varying from a wide range of 50 nm to 0.04 mm on specific EDLC have been discussed in detail. The interfacial geometry of the unit cell in contact with the electrolyte is the most important parameter determining the properties of the EDL. The critical thickness of the electrodes is 1.71 μm in all the morphologies. Polarization increases the interfacial potential and leads to EDL formation. The Stern layer specific capacitance is 167.6 μF cm −2 in all the morphologies. The maximum capacitance is in the decreasing order of interfacial geometry, as FCC > BCC > SC, dependent on the packing factor. The minimum transmittance in all the morphologies is 98.35%, with the constant figure of merit at higher electrode thickness having applications in the chip interconnects. The transient analysis shows that the interfacial current decreases with increasing polarization in the EDL. The capacitance also decreases with the increase of the scan rate.

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Section: Results and Discussionmentioning

confidence: 99%

Effect of Mixed Morphology (Simple Cubic, Face-Centered Cubic, and Body-Centered Cubic)-Based Electrodes on the Electric Double Layer Capacitance of Supercapacitors

Nigam,

Kar

2024

Langmuir

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“…They are therefore appropriate for long-term use [31,33,35,36]. Super capacitors are usually of two types; EDLC ( electrochemical double layer supercapacitor) and Pseudo capacitor [24,32,35,36]. The capacitor designed in this research showed the properties of Pseudo capacitor.…”

Section: Introductionmentioning

confidence: 96%

“…They can store a substantial quantity of electrical energy thanks to their high capacitance. They are great at quickly delivering high power, which qualifies them for applications that call for energy bursts [24,[31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Study of Structural, Optical and Electrical properties of Zn- doped MoS 2 Nanomaterials for their Supercapacitor Applications

Shahid,

Ali

2024

Preprint

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MoS2 i.e., a semiconductor material has promising electrochemical properties, in the field of supercapacitors. Since molybdenum disulfide (MoS2) possesses special electrical, mechanical, and chemical properties, it has attracted a lot of attention for its use in supercapacitors. The current state of play and obstacles in using MoS2-based materials to supercapacitor technology are examined in this research. In this research, Zn doped MoS2 with different concentrations of Zn (2%, 7%, 12%) have been synthesized by Sol-Gel technique. To assess several characteristics of synthesized materials different characterization techniques such as X-ray Diffraction (XRD), Fourier Transformation Infrared Spectroscopy (FTIR), UV-Visible (UV-Vis.) spectroscopy and Scanning Electron Microscopy (SEM) were applied. The XRD patterns showed the Hexagonal structure confirming the successful formation of the material. Furthermore, the optical properties such as absorption and bandgap of the synthesized nanomaterials and composite were determined by UV-Vis. Spectroscopy. SEM indicates the sheets like morphology of the synthesized ZnXMoS2−x. CV and EIS measurements indicate the good electrochemical performance of the synthesized material. The electrode's supercapacitive measurements reveal a high specific capacitance of 1959 F/g for MoS2 while 2304.89 F/g for ZnXMoS2−x respectively at the scan rate of 10 mV/s. EIS measurements were taken from “Nyquist” plot indicating a decrease in resistances of modified electrodes of the samples. The impedance in ZnX(12%)MoS2 − X reduced to half than undoped MoS2.

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“…To achieve this goal, the development of innovative electrolytes is fundamental. The utilized materials and surrounding temperature highly impact the charge storage mechanism of EDLCs [16][17][18]. As higher temperatures increase ion movement and transport properties in general, the reversible adsorption of ions at the interphase between electrode and electrolyte is accelerated.…”

Section: Introductionmentioning

confidence: 99%

An In-Depth Investigation into the Influence of Temperature on the Electrochemical Behavior of Electric Double-Layer Capacitors Containing Ethyl Isopropyl Sulfone-Based Electrolytes

Köps¹,

Kreth²,

Klein³

et al. 2023

Preprint

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Introduction to Supercapacitors

Cited by 11 publications

References 77 publications

Effect of Mixed Morphology (Simple Cubic, Face-Centered Cubic, and Body-Centered Cubic)-Based Electrodes on the Electric Double Layer Capacitance of Supercapacitors

Effect of Mixed Morphology (Simple Cubic, Face-Centered Cubic, and Body-Centered Cubic)-Based Electrodes on the Electric Double Layer Capacitance of Supercapacitors

Study of Structural, Optical and Electrical properties of Zn- doped MoS 2 Nanomaterials for their Supercapacitor Applications

An In-Depth Investigation into the Influence of Temperature on the Electrochemical Behavior of Electric Double-Layer Capacitors Containing Ethyl Isopropyl Sulfone-Based Electrolytes

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