Fundamentals of supercapacitors

Jinitha, C.G.; Jeba, S. Virgin; Sonia, S.; Ramachandran, Rajendran

doi:10.1016/b978-0-323-90530-5.00014-9

Cited by 3 publications

(1 citation statement)

References 83 publications

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“…EDLCs, also referred to as a supercapacitors or ultracapacitors, function as energy storage devices by creating a double layer of ions at the interface between a porous electrode and an electrolyte [133,135]. Unlike conventional capacitors, which store energy through charge accumulation on electrode surfaces, EDLCs leverage the electrochemical double layer phenomenon to achieve high capacitance levels.…”

Section: Electric Double Layer Capacitorsmentioning

confidence: 99%

A Review on the Recent Advances in Battery Development and Energy Storage Technologies

Njema,

Ouma,

Kibet

2024

Journal of Renewable Energy

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Energy storage is a more sustainable choice to meet net-zero carbon foot print and decarbonization of the environment in the pursuit of an energy independent future, green energy transition, and uptake. The journey to reduced greenhouse gas emissions, increased grid stability and reliability, and improved green energy access and security are the result of innovation in energy storage systems. Renewable energy sources are fundamentally intermittent, which means they rely on the availability of natural resources like the sun and wind rather than continuously producing energy. Due to its ability to address the inherent intermittency of renewable energy sources, manage peak demand, enhance grid stability and reliability, and make it possible to integrate small-scale renewable energy systems into the grid, energy storage is essential for the continued development of renewable energy sources and the decentralization of energy generation. Accordingly, the development of an effective energy storage system has been prompted by the demand for unlimited supply of energy, primarily through harnessing of solar, chemical, and mechanical energy. Nonetheless, in order to achieve green energy transition and mitigate climate risks resulting from the use of fossil-based fuels, robust energy storage systems are necessary. Herein, the need for better, more effective energy storage devices such as batteries, supercapacitors, and bio-batteries is critically reviewed. Due to their low maintenance needs, supercapacitors are the devices of choice for energy storage in renewable energy producing facilities, most notably in harnessing wind energy. Moreover, supercapacitors possess robust charging and discharging cycles, high power density, low maintenance requirements, extended lifespan, and are environmentally friendly. On the other hand, combining aluminum with nonaqueous charge storage materials such as conductive polymers to make use of each material’s unique capabilities could be crucial for continued development of robust storage batteries. In general, energy density is a key component in battery development, and scientists are constantly developing new methods and technologies to make existing batteries more energy proficient and safe. This will make it possible to design energy storage devices that are more powerful and lighter for a range of applications. When there is an imbalance between supply and demand, energy storage systems (ESS) offer a way of increasing the effectiveness of electrical systems. They also play a central role in enhancing the reliability and excellence of electrical networks that can also be deployed in off-grid localities.

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Section: Electric Double Layer Capacitorsmentioning

confidence: 99%

A Review on the Recent Advances in Battery Development and Energy Storage Technologies

Njema,

Ouma,

Kibet

2024

Journal of Renewable Energy

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Binder-Free Textile PAN-Based Electrodes for Aqueous and Glycerol-Based Electrochemical Supercapacitors

Barbosa

Marcuzzo²,

Cosentino

et al. 2023

Waste Biomass Valor

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Amidst different types of energy storage systems, electric double-layer capacitors (EDLCs), also known as supercapacitors, have received considerable attention as energy storage alternatives due to their advantageous characteristics: high power density, long-life cycle, lightweight, safe operations, and fast charge-discharge rates. This work addresses these EDLC devices and has been divided into two parts. In the former, the synthesis and characterization of activated carbon ber-felt (ACFF) electrodes from textile PAN ber have been provided. In the latter, electrochemical characterization of the ACFF electrodes in potassium hydroxide solutions (aqueous-based) and in potassium hydroxide-glycerol hybrid electrolytes (glycerol-based electrolytes) have been investigated. The synthesis of ACFF electrodes via two-step oxidation, carbonization, and physical activation resulted in low-cost and binder-free electrodes containing mostly micropores (maximum pore width of 3 nm) and a speci c surface area of 1875 m 2 g − 1 . Electrochemical impedance spectroscopy, cyclic voltammetry, and galvanostatic charge-discharge techniques were carried out in a symmetric two-electrode setup at room temperature. The results showed that ACFF-based EDLCs in aqueous-based electrolyte (2 M KOH) exhibited low electrolyte resistance (0.44 ± 0.04 Ω cm 2 ) and high gravimetric capacitance (129 ± 6 F g − 1 at 1 mV s − 1 ). Although ACFF-based EDLCs in glycerol-based electrolytes exhibited high electrolyte resistance (> 17 ± 2 Ω cm 2 ), they are hybrid green-electrolytes that support a large potential window (< 2.5), which is greater than that of aqueous electrolytes (≈ 1 V). Crude glycerol, the main byproduct in biodiesel production, is non-toxic, relatively safe, and low-cost. The advantages and disadvantages of aqueous and glycerol-based electrolytes have been discussed.

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A review of interface engineering characteristics for high performance perovskite solar cells

Njema,

Kibet,

Ngari

2024

Measurement: Energy

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Fundamentals of supercapacitors

Cited by 3 publications

References 83 publications

A Review on the Recent Advances in Battery Development and Energy Storage Technologies

A Review on the Recent Advances in Battery Development and Energy Storage Technologies

Binder-Free Textile PAN-Based Electrodes for Aqueous and Glycerol-Based Electrochemical Supercapacitors

A review of interface engineering characteristics for high performance perovskite solar cells

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