On the synthesis and electrochemical characterization of ordered hierarchical NiO micro bouquets with trimodal pore size distribution

Anjali, P.; Sonia, T.; Shakir, Imran; Nair, Shantikumar V.; Balakrishnan, Avinash

doi:10.1016/j.jallcom.2014.08.133

Cited by 10 publications

(3 citation statements)

References 48 publications

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“…Generally speaking, pseudocapacitors based on metal oxides revealed higher capacitance than EDLC. However, pseudocapacitors showed low stability because of low electrical conductivity . The hybrid capacitor is combined with EDLC and a pseudo capacitor, in which faradic capacitance and EDLC can make contributions to overall performance at the same time .…”

Section: Zno‐carbonmentioning

confidence: 99%

Zinc Oxide Based Composite Materials for Advanced Supercapacitors

et al. 2018

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Zinc oxide based composite materials show advantages such as low cost, environmental protection, good electrochemical reversibility, high specific capacitance, high power density, high energy density, good cycling stability and simple preparation, which makes them promising materials for advanced supercapacitors. Based on the most advanced research, we present recent findings in the investigation, discussion and challenges related to various kinds of zinc oxide based composite materials, such as zinc oxide/carbon, zinc oxide/graphene, zinc oxide/manganese dioxide, zinc oxide/nickel oxide and other composites.

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Section: Zno‐carbonmentioning

confidence: 99%

Zinc Oxide Based Composite Materials for Advanced Supercapacitors

et al. 2018

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“…Transition metal oxides (TMO) have great attention due to its superior performance and reliability in energy storage applications [4]. Various TMOs and hydroxides i.e., Ni(OH)2 [5], SnO 2 [6], RuO 2 [7], NiO [8], Co 3 O 4 [9], Fe 3 O 4 [10], MnO 2 [11], TiO 2 [12], MoO 3 [13], CuO [14] were studied for the electrode applications in energy storage devices. Zinc oxide (ZnO) is the most researched TMO for energy applications because of its great electrical conductivity σ=230 S/cm., but it has a higher hypothetical capacity of ~1000 mAh/g [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Structural and Electrochemical Behaviour of Cucurbita Seed Like Zinc Oxide Nanoparticles by Chemical Reflux Route

2020

IJRTE

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Cucurbita seed like zinc oxide (ZnO) nanoparticle is synthesised via chemical reflux method. The phase, size and structure of ZnO elucidates by X-ray diffraction method. Infrared spectrum is revealed its functional groups which are present in the synthesised nanoparticles. The cucurbita seed like morphology of prepared zinc oxide nanoparticles were examined by SEM analysis. Optical absorption property and bandgap of synthesized ZnO nanoparticles are investigated. The electrochemical activity of Cucurbita seed like ZnO nanoparticles measurement carry out through electrochemical impedance analysis, galvanostatic charge discharge and cyclic voltammetry results

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“…Metal oxides, in the form of thin films or nanostructures, can also be used as the electrode material for fuel cells, lithium-ion batteries, and electrochemical supercapacitors [ 20 ]. Considerable scientific attention has been directed towards the use of NiO-based electrodes in high-performance ECs, because of the low-cost and facile synthesis with a diversity of approaches [ 14 , 21 , 22 , 23 , 24 , 25 ]. Some reports suggested that the nickel hydroxide can also be successfully used as the material for electrochemical supercapacitors [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole–Nickel Hydroxide Hybrid Nanowires as Future Materials for Energy Storage

et al. 2019

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Hybrid materials play an essential role in the development of the energy storage technologies since a multi-constituent system merges the properties of the individual components. Apart from new features and enhanced performance, such an approach quite often allows the drawbacks of single components to be diminished or reduced entirely. The goal of this paper was to prepare and characterize polymer-metal hydroxide (polypyrrole-nickel hydroxide, PPy-Ni(OH)2) nanowire arrays demonstrating good electrochemical performance. Nanowires were fabricated by potential pulse electrodeposition of pyrrole and nickel hydroxide into nanoporous anodic alumina oxide (AAO) template. The structural features of as-obtained PPy-Ni(OH)2 hybrid nanowires were characterized using FE-SEM and TEM analysis. Their chemical composition was confirmed by energy-dispersive x-ray spectroscopy (EDS). The presence of nickel hydroxide in the synthesized PPy-Ni(OH)2 nanowire array was investigated by X-ray photoelectron spectroscopy (XPS). Both FE-SEM and TEM analyses confirmed that the obtained nanowires were composed of a polymer matrix with nanoparticles dispersed within. EDS and XPS techniques confirmed the presence of PPy-Ni(OH)2 in the nanowire array obtained. Optimal working potential range (i.e., available potential window), charge propagation, and cyclic stability of the electrodes were determined with cyclic voltammetry (CV) at various scan rates. Interestingly, the electrochemical stability window for the aqueous electrolyte at PPy-Ni(OH)2 nanowire array electrode was remarkably wider (ca. 2 times) in comparison with the non-modified PPy electrode. The capacitance values, calculated from cyclic voltammetry performed at 20 mV s−1, were 25 F cm−2 for PPy and 75 F cm−2 for PPy-Ni(OH)2 array electrodes. The cyclic stability of the PPy nanowire array electrode up to 100 cycles showed a capacitance fade of about 13%.

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On the synthesis and electrochemical characterization of ordered hierarchical NiO micro bouquets with trimodal pore size distribution

Cited by 10 publications

References 48 publications

Zinc Oxide Based Composite Materials for Advanced Supercapacitors

Zinc Oxide Based Composite Materials for Advanced Supercapacitors

Structural and Electrochemical Behaviour of Cucurbita Seed Like Zinc Oxide Nanoparticles by Chemical Reflux Route

Polypyrrole–Nickel Hydroxide Hybrid Nanowires as Future Materials for Energy Storage

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