Three-dimensional Co3O4/CoS hierarchical nanoneedle arrays electrode grown on nickel foam for high-performance asymmetric capacitors

Pei, Dongyu; Bao, Jinpeng; Li, Yingying; Li, Yiduo; Wang, Hanbo; Lu, Haiyan; Wang, Zhenlv

doi:10.1016/j.est.2022.104483

Cited by 14 publications

(3 citation statements)

References 25 publications

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“…Three-dimensional electrodes with hierarchical porous structure, high active material loading, large surface area, as well as tunable free volume show much better electrochemical performance than common slurry-cast electrodes. 26,27 To date, the large obstacle is to design an ideal electroconductive scaffold including porous metals, [28][29][30] metal oxides/nitrides/ suldes, [31][32][33] carbon matrices, 34,35 etc. Carbon materials (nanotubes, nanobers, and nanofoams) are thought as a promising candidate for three dimensional scaffolds due to low cost, lightweight, and good chemical stability.…”

Section: Introductionsmentioning

confidence: 99%

Coaxial nickel cobalt selenide/nitrogen-doped carbon nanotube array as a three-dimensional self-supported electrode for electrochemical energy storage

Zhang,

Wang,

Xiao

2024

RSC Adv.

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Section: Introductionsmentioning

confidence: 99%

Coaxial nickel cobalt selenide/nitrogen-doped carbon nanotube array as a three-dimensional self-supported electrode for electrochemical energy storage

Zhang,

Wang,

Xiao

2024

RSC Adv.

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“…Hierarchical porous structured carbon materials have been extensively studied nowadays because it can be fabricated easily from biomass materials. It has advantages of high specific surface area, well-developed pore structure and long cycle stability [12]. It is a material containing at least two or more of the three structures of macroporous, mesoporous and microporous.…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of N-doped Carbon Derived from Kiwi Fruit Peel for Advanced Supercapacitor

Wang¹,

Zhang²,

Li³

et al. 2023

AJST

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As a potential material, biomass material has become a hot spot for energy storage equipment because of its enhanced properties and environmental-friendly features. Waste kiwi fruit peel is a kind of biomass material with a natural macroporous structure. After carbonization, acid pickling and activation, the kiwi fruit peel carbon (KFPC) with a 3D porous structure composed of macropores, mesopores and micropores on its surface and inner channels, respectively. The morphology and structure of the KFPC are studied by scanning electron microscopy (SEM). The electrochemicial properties were analyzed in a three-electrode system. The cyclic voltammetry (CV) measurement at the scan rate of 5-100 mV s-1 in 2 M KOH aqueous electrolyte. The Galvanostatic charge/discharge (GCD) and Electrochemical Impedance Spectroscopy (EIS) are used to calculate the specific capacitance and resistance, respectively. The KFPC exhibits a 2290 m2 g-1 specific surface area. The capacitor has a specific capacitance of 249.8F g− 1 at 1 A g− 1 and a capacity retention rate of 89.22 % after 5000 cycles at 5 A g− 1, indicating that the KFPC is relatively stable. After assembling the materials into a symmetric supercapacitor, it delivered a high energy density of 9.75 Wh kg-1, which reveals the promising application of KFPC in high-performance supercapacitors.

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“…Electrochemical treatment of semiconductor and metal surfaces is a widespread method of both scientific research and industrial production [1,2]. Porous layers [3,4], nanospots [5], nanoneedles [6], thin films [7], etc. were formed due to this method.…”

Section: Introductionmentioning

confidence: 99%

Oxidation of the n-GaAs Surface: Morphological and Kinetic Analysis

Suchikova¹,

Ковачов²,

Lazarenko³

et al. 2022

J. Nano- Electron. Phys.

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We study the directed oxidation processes of the n-GaAs surface as a result of the electrochemical treatment of a semiconductor in an aqueous-alcoholic solution of hydrochloric acid. The analysis of the voltampere characteristics was carried out in order to study the process kinetics, this made it possible to establish the formation stages of the oxide film and islands. The surface morphology was estimated according to the area characteristics, linear sizes, Solidity and Round islands. It was shown that the oxidation occurs by the Stranski-Krastanov mechanism. The formation study of own oxides on the GaAs surface is extremely important, because oxides can significantly impact the material properties. The native oxides of semiconductors are an inactive film that reliably protects the surface from environmental action and when interacting with aggressive substances. In addition, the native oxides of GaAs exhibit semiconductor properties that allow to create oxide/GaAs heterostructures with heterojunctions for optoelectronic applications.

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Three-dimensional Co3O4/CoS hierarchical nanoneedle arrays electrode grown on nickel foam for high-performance asymmetric capacitors

Cited by 14 publications

References 25 publications

Coaxial nickel cobalt selenide/nitrogen-doped carbon nanotube array as a three-dimensional self-supported electrode for electrochemical energy storage

Coaxial nickel cobalt selenide/nitrogen-doped carbon nanotube array as a three-dimensional self-supported electrode for electrochemical energy storage

Facile Fabrication of N-doped Carbon Derived from Kiwi Fruit Peel for Advanced Supercapacitor

Oxidation of the n-GaAs Surface: Morphological and Kinetic Analysis

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