Ni<sub>0.5</sub>Co<sub>0.5</sub>S nano-chains: a high-performing intercalating pseudocapacitive electrode in asymmetric supercapacitor (ASC) mode for the development of large-scale energy storage devices

Kushwaha, Vishal; Mandal, K. D.; Gupta, Asha; Singh, Preetam

doi:10.1039/d3dt04184k

Dalton Trans.

2024

DOI: 10.1039/d3dt04184k

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Ni_0.5Co_0.5S nano-chains: a high-performing intercalating pseudocapacitive electrode in asymmetric supercapacitor (ASC) mode for the development of large-scale energy storage devices

Vishal Kushwaha,

K. D. Mandal,

Asha Gupta

et al.

Abstract: Grid-scale energy storage solutions are necessary to use renewable energy sources efficiently. Supercapattery (supercapacitor + battery) has recently been introduced as a new variety of hybrid devices that engage both...

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Cited by 9 publications

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Synthesis and Electrochemical Performances of Fluffy Carbonized Hexagonal KCoPO₄ as Pseudocapacitive Electrode for High performing Hybrid Supercapacitor Applications

Gopal Nigam,

Kumar Singh,

Mukherjee

et al. 2024

ChemistrySelect

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Electrochemical energy storage is one of the effective ways that can address the mentioned issues as alternative energy/power produced through solar or windmills can effectively be stored for continuous usage. Hybrid/Asymmetric supercapacitors can deliver a significant amount of power density as well as increased energy density with better rate capability and longer lifespan. The fluffy carbonized hexagonal KCoPO4 synthesized via a simple sol‐gel method accompanied by calcination has delivered high capacitance and longer cyclibility as a positive electrode in aqueous asymmetric supercapacitors. The fluffy carbonized hexagonal KCoPO4 exhibited a specific capacitance equal to 725 F/g at 0.5 A/g current density with excellent cyclic stability. The predominant intercalative pseudocapacitive charge storage behavior seems to be the reason behind the high capacitance of the electrode due to the active involvement of Co2+/3+ redox couple mediate charge storage as intercalative (inner) and capacitive, (outer) surface charges storage on the electrode were close to 37 % and 63 % respectively. Aqueous Asymmetric supercapacitor mode with KCoPO4 being a positive electrode and activated carbon being a negative electrode (KCoPO4//AC) was designed to address its performance in 2 M KOH aqueous electrolyte. The fabricated device in AASc mode (AC//KCoPO4) achieved the highest energy density close to 121.1 Wh/kg with a high power density of 6945 W/kg in the potential window of 1.5 V in 2 M KOH electrolyte.

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Synthesis and Electrochemical Performances of Fluffy Carbonized Hexagonal KCoPO₄ as Pseudocapacitive Electrode for High performing Hybrid Supercapacitor Applications

Gopal Nigam,

Kumar Singh,

Mukherjee

et al. 2024

ChemistrySelect

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High-Energy–Density Fiber Supercapacitors Based on Transition Metal Oxide Nanoribbon Yarns for Comprehensive Wearable Electronics

Ahn,

Padmajan Sasikala,

Jeong

et al. 2024

Adv. Fiber Mater.

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Fiber supercapacitors (FSs) based on transition metal oxides (TMOs) have garnered considerable attention as energy storage solutions for wearable electronics owing to their exceptional characteristics, including superior comfortability and low weights. These materials are known to exhibit high energy densities, high specific capacitances, and fast redox reactions. However, current fabrication methods for these structures primarily rely on chemical deposition, often resulting in undesirable material structures and necessitating the use of additives, which can degrade the electrochemical performance of such structures. Herein, physically deposited TMO nanoribbon yarns generated via delamination engineering of nanopatterned TMO/metal/TMO trilayer arrays are proposed as potential high-performance FSs. To prepare these arrays, the target materials were initially deposited using a nanoline mold, and subsequently, the nanoribbon was suspended through selective plasma etching to obtain the desired twisted yarn structures. Because of the direct formation of TMOs on Ni electrodes, a high energy/power density and excellent electrochemical stability were achieved in asymmetric FS devices incorporating CoNixOy nanoribbon yarns and graphene fibers. Furthermore, a triboelectric nanogenerator, pressure sensor, and flexible light-emitting diode were synergistically combined with the FS. The integration of wearable electronic components, encompassing energy harvesting, energy storage, and powering sensing/display devices, is promising for the development of future smart textiles. Graphical Abstract

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Guidelines for supercapacitor electrochemical analysis: A comprehensive review of methodologies for finding charge storage mechanisms

Pholauyphon,

Charoen-amornkitt,

Suzuki

et al. 2024

Journal of Energy Storage

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Ni_0.5Co_0.5S nano-chains: a high-performing intercalating pseudocapacitive electrode in asymmetric supercapacitor (ASC) mode for the development of large-scale energy storage devices

Abstract: Grid-scale energy storage solutions are necessary to use renewable energy sources efficiently. Supercapattery (supercapacitor + battery) has recently been introduced as a new variety of hybrid devices that engage both...

Cited by 9 publications

References 101 publications

Synthesis and Electrochemical Performances of Fluffy Carbonized Hexagonal KCoPO₄ as Pseudocapacitive Electrode for High performing Hybrid Supercapacitor Applications

Synthesis and Electrochemical Performances of Fluffy Carbonized Hexagonal KCoPO₄ as Pseudocapacitive Electrode for High performing Hybrid Supercapacitor Applications

High-Energy–Density Fiber Supercapacitors Based on Transition Metal Oxide Nanoribbon Yarns for Comprehensive Wearable Electronics

Guidelines for supercapacitor electrochemical analysis: A comprehensive review of methodologies for finding charge storage mechanisms

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Ni0.5Co0.5S nano-chains: a high-performing intercalating pseudocapacitive electrode in asymmetric supercapacitor (ASC) mode for the development of large-scale energy storage devices

Abstract: Grid-scale energy storage solutions are necessary to use renewable energy sources efficiently. Supercapattery (supercapacitor + battery) has recently been introduced as a new variety of hybrid devices that engage both...

Cited by 9 publications

References 101 publications

Synthesis and Electrochemical Performances of Fluffy Carbonized Hexagonal KCoPO4 as Pseudocapacitive Electrode for High performing Hybrid Supercapacitor Applications

Synthesis and Electrochemical Performances of Fluffy Carbonized Hexagonal KCoPO4 as Pseudocapacitive Electrode for High performing Hybrid Supercapacitor Applications

High-Energy–Density Fiber Supercapacitors Based on Transition Metal Oxide Nanoribbon Yarns for Comprehensive Wearable Electronics

Guidelines for supercapacitor electrochemical analysis: A comprehensive review of methodologies for finding charge storage mechanisms

Contact Info

Product

Resources

About

Ni_0.5Co_0.5S nano-chains: a high-performing intercalating pseudocapacitive electrode in asymmetric supercapacitor (ASC) mode for the development of large-scale energy storage devices

Synthesis and Electrochemical Performances of Fluffy Carbonized Hexagonal KCoPO₄ as Pseudocapacitive Electrode for High performing Hybrid Supercapacitor Applications

Synthesis and Electrochemical Performances of Fluffy Carbonized Hexagonal KCoPO₄ as Pseudocapacitive Electrode for High performing Hybrid Supercapacitor Applications