Browsing by Author "Vikas Kumar Pandey"

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Future outlook and challenges for supercapacitors
(Bentham Science Publishers, 2024) Vikas Kumar Pandey; Bhawna Verma
The contemporary research environment calls for developing nextgeneration devices using cutting-edge technologies for energy storage applications. Supercapacitors are becoming burgeoning contenders in the energy sector due to their increased durability and quicker charge storage capacity. In contrast to batteries and fuel cells, supercapacitors are a less realistic solution for practical applications. Additionally, there is a pressing need for fabrication techniques that must be addressed to deliver an appropriate supercapacitor electrode. The book chapter will better describe the difficulties encountered during various supercapacitor research, development, and commercial application phases. Finally, a conclusive prognosis has been given on how the discussion above will deliver essential insights and create chances to expand the possible application of new-generation supercapacitors. © 2024 Bentham Science Publishers. All rights reserved.
Nanowires for Flexible Electrochemical Energy Devices
(CRC Press, 2023) Tapas Das; Sanjeev Verma; Vikas Kumar Pandey; Bhawna Verma
The demand for flexible electronics devices has been increasing due to their excessive use in implantable medical equipment, artificial skins, roll-up displays, and wearable devices. Huge specific energy and specific power flexible energy storage backup systems are required to operate the flexible devices. Nanowire is such a type of one-dimensional material, which can provide flexibility and mechanical stability to an energy storage device. Nanowires provide direct pathways to current flow, resulting in facilitation of electron movement more than other structures. The large specific surface area of nanowires enhances the contact area between electrode-electrolyte and as a result, the specific capacitance, energy, and power energy storage device increases. This chapter covers the use of nanowires in flexible energy storage devices, like supercapacitors, lithium-ion, sodium-ion, metal-air batteries, etc. Different types of carbon, polymer, organic, inorganic, and composite nanowires have been discussed briefly. Finally, the existing issues along with the current outlook have been addressed in this chapter. © 2023 selection and editorial matter, Ram K. Gupta.
Pseudocapacitive Materials-Based Metal-Air Batteries
(Springer Science and Business Media Deutschland GmbH, 2024) Sanjeev Verma; Vikas Kumar Pandey; Ram K. Gupta; Shivani Verma; Bhawna Verma
Researchers’ attraction has been sparked by the fabrication of green and renewable energy-storage innovations in view of the increasing hurdle around the needs of energy and environmental concerns. MABs (Metal-air batteries), mainly rechargeable MABs, are seen as a viable energy storage/conversion solution because of their high energy density and specific power, lower price, as well as its safety. Moreover, the fabrication of MABs is significantly hindered by their lower rate ability, corrosion, and dendrite formation between the electrochemical actions, less active material synthesis strategies expansion, slower oxygen reaction kinetics at cathode surface, electrolyte and electrode refinement, and a proper separator selection. This chapter goes into great detail to help readers understand many types of MABs, the fundamentals of electrode reactions and battery configurations, the function of electrode active materials, separators, and electrolytes, as well as future scenarios. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.
Supercapacitor materials: From research to the real world
(Bentham Science Publishers, 2024) Ahmad Nawaz; Vikas Kumar Pandey; Pradeep Kumar
Supercapacitors are gaining prominence in the realm of energy storage devices due to their high power density, extended cycle stability, and fast charge/discharge rates. Supercapacitors are widely used in industries such as service grids, transportation, consumer electronics, wearable and flexible systems, energy harvesting, etc. Due to their remarkable high-power performance, high reliability, and extended lifetime, they are a key electrochemical device for energy storage; as a result, the worldwide supercapacitor market is rapidly developing. Supercapacitors have a straightforward basic construction, but different products for various applications require cells in various configurations. The application of supercapacitors from the perspective of the industry is the subject of this chapter. © 2024 Bentham Science Publishers. All rights reserved.