Flower-like MnO2 decorated activated multihole carbon as high-performance asymmetric supercapacitor electrodes

Zhu, Shijin; Cen, Wanglai; Hao, Longlong; Ma, Jixin; Yu, Liang; Zheng, Huaili; Zhang, Jintao

doi:10.1016/j.matlet.2014.07.120

Cited by 56 publications

(21 citation statements)

References 22 publications

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“…MnO 2 NSs with controllable shapes and sizes have been synthesized using different growth methods [32][33][34]. In particular, three-dimensional (3D) flower shaped and hierarchical core-shell-like MnO 2 NSs synthesized by assembling 1D or 2D building blocks (such as nanosheets, nanoparticles, and nanowires) have shown significant enhancement in energy storage properties [35][36][37][38]. Because of their high specific surface area, high porosity, and 3D structures, hierarchical MnO 2 pseudocapacitive materials provide additional electroactive sites with shorter diffusion pathways for ions and electrons.…”

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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“…Up to now, MnO 2 with diverse structures and morphologies (such as nanosheets [4], hollow nanospheres [5], nanoflowers [6], nanowires/nanorods [7,8], thin films [9], and nanotubes [10]) and different crystalline phases (such as a [11], b [12], g [13], and d [14]) have been fabricated via electrochemical and chemical routes, and their electrochemical properties have been investigated. These studies indicate that the outstanding nanostructures and crystalline phases of the MnO 2 materials have been regarded as critical factors to influence their properties.…”

Section: Introductionmentioning

confidence: 99%

Morphology and crystallinity-controlled synthesis of manganese cobalt oxide/manganese dioxides hierarchical nanostructures for high-performance supercapacitors

Chen

et al. 2015

Journal of Power Sources

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“…Wh·kg -1 , in Na 2 SO 4 ) [47][48][49] , , MnO 2 //AC (<28.8 Wh·kg -1 , in 1M Na 2 SO 4 ) [50,51] , MnO2-C//AC (30.6 Wh·kg -1 , in 0.5 M Na 2 SO 4 ) [52] and MnO2-AC//AC (9.7 Wh·kg -1 , in 1 M Na 2 SO 4 ) [53] .…”

Section: Electrochemical Performance Of Symmetric and Asymmetric Devicesmentioning

confidence: 99%

Symmetric/Asymmetric Supercapacitor Based on the Perovskite-type Lanthanum Cobaltate Nanofibers with Sr-substitution.

Cao

Lin

Sun

et al. 2015

Electrochimica Acta

118

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Flower-like MnO2 decorated activated multihole carbon as high-performance asymmetric supercapacitor electrodes

Cited by 56 publications

References 22 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

Morphology and crystallinity-controlled synthesis of manganese cobalt oxide/manganese dioxides hierarchical nanostructures for high-performance supercapacitors

Symmetric/Asymmetric Supercapacitor Based on the Perovskite-type Lanthanum Cobaltate Nanofibers with Sr-substitution.

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