A review on the recent advances in hybrid supercapacitors

Chatterjee, Dhruba P.; Nandi, Arun K.

doi:10.1039/d1ta02505h

Cited by 653 publications

(306 citation statements)

References 252 publications

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“…In this context, the opportunity to store energy to deliver power on demand has become a crucial aspect for the more efficient use of energy [ 1 ]. Among electrochemical energy storage devices, supercapacitors, also known as electrochemical capacitors, are under intensive academic and industrial investigations in recent years since they have distinct advantages such as higher power density due to the fast charging/discharging rate and long-life stability when compared to batteries and fuel cells [ 2 ]. Supercapacitors (SCs) are composed of a medium sandwiched between two high-surface-area electrodes, thus a simple and highly versatile structure that match the requirements for consumer electronics addressed to be smaller, lighter, thinner, and flexible in the near future.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Evaluation of Sustainable Binders for Environmentally Friendly Carbon-Based Supercapacitors

et al. 2021

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Environmentally friendly energy storage devices have been fabricated by using functional materials obtained from completely renewable resources. Gelatin, chitosan, casein, guar gum and carboxymethyl cellulose have been investigated as sustainable and low-cost binders within the electrode active material of water-processable symmetric carbon-based supercapacitors. Such binders are selected from natural-derived materials and industrial by-products to obtain economic and environmental benefits. The electrochemical properties of the devices based on the different binders are compared by using cyclic voltammetry, galvanostatic charge/discharge curves and impedance spectroscopy. The fabricated supercapacitors exhibit series resistance lower than a few ohms and values of the specific capacitance ranged between 30 F/g and 80 F/g. The most performant device can deliver ca. 3.6 Wh/kg of energy at a high power density of 3925 W/kg. Gelatin, casein and carboxymethyl cellulose-based devices have shown device stability up to 1000 cycles. Detailed analysis on the charge storage mechanisms (e.g., involving faradaic and non-faradaic processes) at the electrode/electrolyte interface reveals a pseudocapacitance behavior within the supercapacitors. A clear correlation between the electrochemical performances (e.g., cycle stability, capacitance retention, series resistance value, coulombic efficiency) ageing phenomena and charge storage mechanisms within the porous carbon-based electrode have been discussed.

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Section: Introductionmentioning

confidence: 99%

A Comparative Evaluation of Sustainable Binders for Environmentally Friendly Carbon-Based Supercapacitors

et al. 2021

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“…The electronic structure of the traditional methanol synthesis catalyst (Cu-ZnO-Al 2 O 3 ) was altered by adding the N-doped graphene, which provided a synergistic effect for methanol synthesis [189]. Incorporating metal oxides to single-wall CNT electrode can form a hybrid structure with an increase in specific surface area, which also improved electrical conductivity and charge transfer [191,192]. Moreover, doping carbon into photocatalysts can enhance light absorption and improve the photothermal conversion efficiency by reducing the energy for oxygen vacancy formation, thus generating a high concentration of active sites [190].…”

Section: General Methods For Modifying Metal Oxide Surface Structure For Co 2 Transformationmentioning

confidence: 99%

Impacts of the Catalyst Structures on CO2 Activation on Catalyst Surfaces

2021

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Utilizing CO2 as a sustainable carbon source to form valuable products requires activating it by active sites on catalyst surfaces. These active sites are usually in or below the nanometer scale. Some metals and metal oxides can catalyze the CO2 transformation reactions. On metal oxide-based catalysts, CO2 transformations are promoted significantly in the presence of surface oxygen vacancies or surface defect sites. Electrons transferable to the neutral CO2 molecule can be enriched on oxygen vacancies, which can also act as CO2 adsorption sites. CO2 activation is also possible without necessarily transferring electrons by tailoring catalytic sites that promote interactions at an appropriate energy level alignment of the catalyst and CO2 molecule. This review discusses CO2 activation on various catalysts, particularly the impacts of various structural factors, such as oxygen vacancies, on CO2 activation.

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“…SCs, including electrochemical double-layer capacitors (EDLCs) and pseudocapacitors, show lower energy storage capability (ES ≤ 10 W h kg −1 ) compared to batteries (ES ∼ 180 W h kg −1 ). While SCs can be achieved a higher-power density (10 kW kg −1 ) ( Guo et al, 2017 ; Chatterjee and Nandi, 2021 ). However, the shape of the device is greatly limited due to the unbending of the electrodes of traditional SCs.…”

Section: Introductionmentioning

confidence: 99%

Perspective on Micro-Supercapacitors

et al. 2022

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The rapid development of portable, wearable, and implantable electronic devices greatly stimulated the urgent demand for modern society for multifunctional and miniaturized electrochemical energy storage devices and their integrated microsystems. This article reviews material design and manufacturing technology in different micro-supercapacitors (MSCs) along with devices integrate to achieve the targets of their various applications in recent years. Finally, We also critically prospect the future development directions and challenges of MSCs.

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A review on the recent advances in hybrid supercapacitors

Abstract: Presently, supercapacitors have gained an important space in the energy storage module for their extraordinary high power density, though they are well behind in energy density of batteries or fuel...

Cited by 653 publications

References 252 publications

A Comparative Evaluation of Sustainable Binders for Environmentally Friendly Carbon-Based Supercapacitors

A Comparative Evaluation of Sustainable Binders for Environmentally Friendly Carbon-Based Supercapacitors

Impacts of the Catalyst Structures on CO2 Activation on Catalyst Surfaces

Perspective on Micro-Supercapacitors

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