Hybrid framework of sputter deposited vanadium nitride embedded Cu2O/CuO nanostructures for electrocatalytic oxygen evolution reaction

Deepak, Deepak; Raghav, Jyoti; Panghal, Abhishek; Singh, Tanuja; Roy, Soumyendu; Roy, Susanta Sinha

doi:10.1016/j.jallcom.2023.173391

Cited by 10 publications

(1 citation statement)

References 65 publications

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“…MnCo 2 O 4 has shown good electrochemical behavior because of the synergistic effects between Co and Mn . Some recent studies have indicated that the electrical conductivity of TMO pseudocapacitors can be improved by incorporating metals like Al, Cu, , Zn, and Fe. , Silver oxide nanoparticles, with their high electrochemical surface area, porous morphology, thermal stability, electrical conductivity, and high specific capacity, are a well-established electrode material. , In general, there are many ways to enhance the performance of TMO electrodes, like the addition of carbon-based material, incorporation of different transition metal cations, and making hybrid morphology . Flower-like hybrid morphology of FeCo 2 S 4 /reduced graphene oxide demonstrated very high conductivity and delivered an energy density of 88.2 W h kg –1 .…”

Section: Introductionmentioning

confidence: 99%

High-Performance Supercapacitor with a Hybrid Nanostructure of Sputter-Decorated Ag_xO over Co–Mn–Cu Ternary Metal Oxide

Raghav,

Roy

2024

ACS Appl. Eng. Mater.

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Recent studies have indicated that ternary and quaternary metal oxides are efficient electrode materials for supercapacitors, owing to synergism between multiple metal ions. Herein, we report quaternary composite (QC) electrodes with hybrid nanostructures, consisting of Ag x O nanostructures sputter deposited over flower-like copper–manganese–cobalt oxide (CMC) nanostructures. Ag x O nanostructures were deposited using a DC magnetron sputtering system at different plasma powers. The morphology of the QC electrodes and the relative abundance of different oxidation states of Ag vary with plasma power, which affects the electrochemical performance of the electrodes. QC electrodes fabricated at 45 W plasma power had well-defined Ag x O nanodots on partially exposed CMC nanoflowers, which outperformed the QC electrodes with other morphologies, as well as ternary metal oxide and Ag x O-based electrodes. A specific capacitance of 2136 F/g at a scan rate of 1 mV/s was obtained with the outperformed electrode. The solid-state symmetric supercapacitor assembled with the best-performed electrodes delivered an energy density of 98.16 W h kg–1 at a power density of 3000 W kg–1.

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Section: Introductionmentioning

confidence: 99%

High-Performance Supercapacitor with a Hybrid Nanostructure of Sputter-Decorated Ag_xO over Co–Mn–Cu Ternary Metal Oxide

Raghav,

Roy

2024

ACS Appl. Eng. Mater.

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Nanoarchitectonics of Nickel Nitride‐V₂CT_X Mxene: An Efficient Bifunctional Catalyst for Alkaline Water/Seawater Applications

Deepak,

Singh,

Mahapatra

et al. 2024

Advanced Sustainable Systems

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Seawater, being the most plentiful natural water source worldwide, is a highly abundant and cost‐efficient medium for producing hydrogen by alkaline water electrolysis. However, the advancement of seawater electrolysis is hindered by notable impediments caused by chloride corrosion at the anode and the simultaneous chlorine evolution process. Only a limited number of non‐noble electrocatalysts demonstrate noteworthy bifunctional catalytic efficacy and long‐term durability. In this regard, Nickel Nitride tailored V2CTX Mxene nanostructures is reported as a bifunctional catalyst for overall water/seawater applications. The optimized sample Ni3N@3000‐V2CTx exhibits low overpotential values of 90 and 300 mV in acidic and alkaline + seawater solutions respectively at 10 mA cm−2 for hydrogen evolution reaction. Similarly, this catalyst shows 70 and 240 mV overpotential values in alkaline water and alkaline + seawater solutions respectively at the same current density for oxygen evolution reaction. Synergetic effects of Multiple Vanadium and Nickel valency along with compelling nitrogen bonds creates elevated density of exposed functional sites for electrocatalytic activity. Furthermore, the notable electrochemical active surface area and mass activity suggest an enhanced and significant presence of abundant active sites. Additionally, the high stability and significantly decreased charge transfer resistance expedited the overall water/seawater‐splitting reaction rate.

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Recent Advances in Selective Chemical Etching of Nanomaterials for High‐Performance Electrodes in Electrocatalysis and Energy Storage

Campbell,

Brown,

Nguyen

et al. 2024

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To move beyond an energy economy dominated by fossil fuel utilization, high‐performance electrochemical cells must be designed for energy storage and conversion. Selective etching is a promising, cost‐effective solution‐processing method for the large‐scale top‐down production of nanomaterials for high‐performance electrodes. This review outlines general methodologies and mechanisms by which selective etching can be applied to create nanomaterials, including various template‐assisted, facet‐selective, and electrochemical methods, as well as in‐depth case studies of state‐of‐the‐art research involving selectively etched nanomaterials for electrocatalytic and energy storage applications. In addition, the standard design strategies by which the electrochemical performance of selectively etched nanomaterials is enhanced, including increased surface area, morphology, diffusion channels, heterojunction interfaces, and facet reactivity, are discussed. This review provides a foundation of knowledge for researchers seeking the rational design of nanomaterials for electrode application through selective etching.

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Hybrid framework of sputter deposited vanadium nitride embedded Cu2O/CuO nanostructures for electrocatalytic oxygen evolution reaction

Cited by 10 publications

References 65 publications

High-Performance Supercapacitor with a Hybrid Nanostructure of Sputter-Decorated Ag_xO over Co–Mn–Cu Ternary Metal Oxide

High-Performance Supercapacitor with a Hybrid Nanostructure of Sputter-Decorated Ag_xO over Co–Mn–Cu Ternary Metal Oxide

Nanoarchitectonics of Nickel Nitride‐V₂CT_X Mxene: An Efficient Bifunctional Catalyst for Alkaline Water/Seawater Applications

Recent Advances in Selective Chemical Etching of Nanomaterials for High‐Performance Electrodes in Electrocatalysis and Energy Storage

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Hybrid framework of sputter deposited vanadium nitride embedded Cu2O/CuO nanostructures for electrocatalytic oxygen evolution reaction

Cited by 10 publications

References 65 publications

High-Performance Supercapacitor with a Hybrid Nanostructure of Sputter-Decorated AgxO over Co–Mn–Cu Ternary Metal Oxide

High-Performance Supercapacitor with a Hybrid Nanostructure of Sputter-Decorated AgxO over Co–Mn–Cu Ternary Metal Oxide

Nanoarchitectonics of Nickel Nitride‐V2CTX Mxene: An Efficient Bifunctional Catalyst for Alkaline Water/Seawater Applications

Recent Advances in Selective Chemical Etching of Nanomaterials for High‐Performance Electrodes in Electrocatalysis and Energy Storage

Contact Info

Product

Resources

About

High-Performance Supercapacitor with a Hybrid Nanostructure of Sputter-Decorated Ag_xO over Co–Mn–Cu Ternary Metal Oxide

High-Performance Supercapacitor with a Hybrid Nanostructure of Sputter-Decorated Ag_xO over Co–Mn–Cu Ternary Metal Oxide

Nanoarchitectonics of Nickel Nitride‐V₂CT_X Mxene: An Efficient Bifunctional Catalyst for Alkaline Water/Seawater Applications