Jute Sticks Derived and Commercially Available Activated Carbons for Symmetric Supercapacitors with Bio‐electrolyte: A Comparative Study

Shah, Syed Shaheen; Çevik, Emre; Aziz, Md. Abdul; Qahtan, Talal F.; Bozkurt, Ayhan; Yamani, Zain H.

doi:10.1016/j.synthmet.2021.116765

Cited by 128 publications

(147 citation statements)

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“…Equation (1) indicates the direct relation between the capacitance with dielectric constant material and surface area, while inverse relation with the inter-planar thickness. Besides this, for energy density and power density determination, Equations ( 2) and ( 3) can be employed [41].…”

Section: Types and Classification Of Supercapacitorsmentioning

confidence: 99%

“…The processing of solutions, melting, compression molding, and chemical sample vapor removal, such as form-altered fibers, CNT composites, CNT composite fibers, and so on, are all utilized to prepare such varied versions of CNTs [62]. The other type is activated carbon (AC); due to its high surface area and oxidation ability, superior electrochemical efficiency is observed in EDLC devices based on the activated carbon electrodes [41,63,64]. The phonon density of the states is affected by mixing or substantial overlap of the Raman bands D and G as a result of the general oxidation of carbon materials.…”

Section: Types and Classification Of Supercapacitorsmentioning

confidence: 99%

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A Review of Supercapacitors: Materials Design, Modification, and Applications

et al. 2021

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Supercapacitors (SCs) have received much interest due to their enhanced electrochemical performance, superior cycling life, excellent specific power, and fast charging–discharging rate. The energy density of SCs is comparable to batteries; however, their power density and cyclability are higher by several orders of magnitude relative to batteries, making them a flexible and compromising energy storage alternative, provided a proper design and efficient materials are used. This review emphasizes various types of SCs, such as electrochemical double-layer capacitors, hybrid supercapacitors, and pseudo-supercapacitors. Furthermore, various synthesis strategies, including sol-gel, electro-polymerization, hydrothermal, co-precipitation, chemical vapor deposition, direct coating, vacuum filtration, de-alloying, microwave auxiliary, in situ polymerization, electro-spinning, silar, carbonization, dipping, and drying methods, are discussed. Furthermore, various functionalizations of SC electrode materials are summarized. In addition to their potential applications, brief insights into the recent advances and associated problems are provided, along with conclusions. This review is a noteworthy addition because of its simplicity and conciseness with regard to SCs, which can be helpful for researchers who are not directly involved in electrochemical energy storage.

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Section: Types and Classification Of Supercapacitorsmentioning

confidence: 99%

Section: Types and Classification Of Supercapacitorsmentioning

confidence: 99%

A Review of Supercapacitors: Materials Design, Modification, and Applications

et al. 2021

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“…The maximum C sp of the ACNS‐based supercapacitors at the current density of 1 Ag −1 are 105, 128, and 156 Fg −1 in 0.5 M SS, 0.5 M SC, and 0.5 M SP, respectively. The general trend of decreasing C sp with increasing current density was followed by all the tested electrolytes [5,6,51] …”

Section: Resultsmentioning

confidence: 85%

“…The efficacy of renewable energy sources largely depends on the efficiency of energy conversion and storage devices [2] . Supercapacitors with its high‐power density and long‐life cycles have received considerable research interest amongst various energy storage devices [3–9] . Supercapacitors are categorized into three types: (1) electrochemical double‐layer capacitors (EDLC), (2) pseudocapacitors, and (3) hybrid supercapacitors based on the charge storage mechanism [5,6,10,11] .…”

Section: Introductionmentioning

confidence: 99%

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Development of a Novel Bio‐based Redox Electrolyte using Pivalic Acid and Ascorbic Acid for the Activated Carbon‐based Supercapacitor Fabrication

et al. 2021

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Supercapacitor is considered a promising energy storage device due to its high‐power density and high specific capacitance. Electrode materials and electrolytes are major components of supercapacitors. The most used electrolytes are not biocompatible, which limits their practical applications. Bio‐electrolytes often cause low performances of supercapacitors. However, the inadequate performances of bio‐electrolytes for supercapacitor applications could be improved using redox molecules. Here, we are reporting the development of a novel redox bio‐electrolyte based on pivalic acid (PA) and ascorbic acid (AA). The salts of PA and AA served as the bio‐electrolyte and redox molecules, respectively. It is worth to note that PA which can be generated from bio‐sources and industrial wastes, is soluble in alkaline solutions. AA is found in most living organisms, including plants. The developed supercapacitor with the bio‐based redox electrolyte provides a specific capacitance of 308 Fg−1 at a current density of 1 Ag−1 and achieved an energy density of 15 Whkg−1 at a power density of 300 Wkg−1. The supercapacitor demonstrates a good coulombic efficiency of ∼97% with capacitance retention of ∼72% after 10000 charge‐discharge cycles. This study is expected to widen the applications of bio‐based redox electrolytes for practical electrochemical energy storage applications and enables access to greener and more sustainable energy storage technology.

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