Three-dimensional MnO2 nanowire/ZnO nanorod arrays hybrid nanostructure for high-performance and flexible supercapacitor electrode

Li, Songzhan; Wen, Jian; Mo, Xiaoming; Long, Hao; Wang, Haoning; Wang, Jianbo; Fang, Guojia

doi:10.1016/j.jpowsour.2014.01.066

Cited by 118 publications

(53 citation statements)

References 31 publications

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“…), different growth methods have been investigated [45][46][47][48]. Among these methods, electrochemical deposition (ED) is a facile approach because it is quick, operates at low-temperature, and has a simple experimental setup.…”

Section: Introductionmentioning

confidence: 99%

A facile one-step approach to hierarchically assembled core–shell-like MnO2@MnO2 nanoarchitectures on carbon fibers: An efficient and flexible electrode material to enhance energy storage

Nagaraju

Min

et al. 2016

Nano Res.

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Hierarchical core-shell-like MnO 2 nanostructures (NSs) were used to anchor MnO 2 hexagonal nanoplate arrays (HNPAs) on carbon cloth (CC) fibers. The NSs were prepared by a novel one-step electrochemical deposition method. Under an external cathodic voltage of 2.0 V for 30 min, hierarchical core-shell-like MnO 2 -NS-decorated MnO 2 HNPAs (MnO 2 NSs@MnO 2 HNPAs) were uniformly grown on CC with reliable adhesion. The phase purity and morphological properties of the samples were characterized by various physicochemical techniques. At a constant external cathodic voltage, growth of MnO 2 NSs@MnO 2 HNPAs on CC was carried for different time periods. When utilized as a flexible, robust, and binder-free electrode for pseudocapacitors, the hierarchical core-shell-like MnO 2 NSs@MnO 2 HNPAs on CC showed clearly enhanced electrochemical properties in 1 M Na 2 SO 4 electrolyte solution. The results indicate that the MnO 2 NSs@MnO 2 HNPAs on CC have a maximum specific capacitance of 244.54 F/g at a current density of 0.5 A/g with excellent cycling stability compared to that of bare MnO 2 HNPAs on CC (112.1 F/g at 0.5 A/g current density). We believe that the superior charge storage performance of the pseudocapacitive electrode can be mainly attributed to the hierarchical MnO 2 NSs@MnO 2 HNPAs building blocks that have a large specific surface area, offering additional electroactive sites for efficient electrochemical reactions. The facile and single-step approach to growth of hierarchical pseudocapacitive materials on textile based electrodes opens up the possibility for the fabrication of high-performance flexible energy storage devices.

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Section: Introductionmentioning

confidence: 99%

A facile one-step approach to hierarchically assembled core–shell-like MnO2@MnO2 nanoarchitectures on carbon fibers: An efficient and flexible electrode material to enhance energy storage

Nagaraju

Min

et al. 2016

Nano Res.

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“…To address these problem, a facile design of 3D open architecture process has been developed [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Controlled synthesis of hierarchical birnessite-type MnO 2 nanoflowers for supercapacitor applications

Zhao

Liu

Hou

et al. 2015

Applied Surface Science

113

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“…Moreover, the environmentally friendliness and natural abundance of ZnO make them a strong candidate to replace the use of high cost and poisonous indium doped tin oxide (ITO) [2]. However, ZnO exhibits disadvantages because its resistivity is higher than that of ITO and strongly depends on film thickness [3].…”

Section: Introductionmentioning

confidence: 99%

Morphology Evolution Of ZnO Thin Films Deposited By Nitrogen Mediated Crystallization Method

Suhariadi

Shiratani

Itagaki

2018

MATEC Web of Conferences

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Abstract.We study the surface morphology of ZnO thin films deposited by nitrogen mediated crystallization method utilizing atomic force microscopy as a function of nitrogen flow rates. Initially, the surface morphology of ZnO thin film deposited without nitrogen exhibits a bumpy surface with spiky grains where the skewness and kurtosis values were found to be 0.48 and 4.80, respectively. By addition of small amount of nitrogen, the skewness and kurtosis values of the films significantly decrease associated with a flatter topography. Further increase in nitrogen flow rate to 16 sccm has roughened the surface shown mainly by the increase in kurtosis value to be 3.30. These results indicate that the addition of small amount of nitrogen during deposition process has enhanced the adatoms migration on the surface resulting in a superior film with a larger grain size. Two-dimensional power spectral density analysis reveals that all the films have self-affine fractal geometry with total fractal values in the range of 2.14 to above 3.00.

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Three-dimensional MnO2 nanowire/ZnO nanorod arrays hybrid nanostructure for high-performance and flexible supercapacitor electrode

Cited by 118 publications

References 31 publications

A facile one-step approach to hierarchically assembled core–shell-like MnO2@MnO2 nanoarchitectures on carbon fibers: An efficient and flexible electrode material to enhance energy storage

A facile one-step approach to hierarchically assembled core–shell-like MnO2@MnO2 nanoarchitectures on carbon fibers: An efficient and flexible electrode material to enhance energy storage

Controlled synthesis of hierarchical birnessite-type MnO 2 nanoflowers for supercapacitor applications

Morphology Evolution Of ZnO Thin Films Deposited By Nitrogen Mediated Crystallization Method

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