Self-grown MnO 2 nanosheets on carbon fiber paper as high-performance supercapacitors electrodes

Dang, Wenhui; Dong, Chengjun; Zhang, Zhifang; Chen, Gang; Wang, Yude; Guan, Hongtao

doi:10.1016/j.electacta.2016.08.142

Cited by 46 publications

(18 citation statements)

References 43 publications

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“…Carbon fibers (CFs) or carbon nanofibers (CNFs) is another class of recently emerged materials that provides excellent supports for MnO x . CNFs with smaller diameters than CFs are generally preferred, as a higher MnO x loading can be obtained.…”

Section: Mnox‐based Hybrid Electrodes For Supercapacitorsmentioning

confidence: 99%

Manganese‐Oxide‐Based Electrode Materials for Energy Storage Applications: How Close Are We to the Theoretical Capacitance?

Wang

2018

Advanced Materials

109

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Of the transition metals, Mn has the greatest number of different oxides, most of which have a special tunnel structure that enables bulk redox reactions. The high theoretical capacitance and capacity results from a greater number of accessible oxidation states than other transition metals, wide potential window, and the high natural abundance make MnO species promising electrode materials for energy storage applications. Although MnO electrode materials have been intensely studied over the past decade, their electrochemical performance is still insufficient for practical applications. Currently, there is a trade-off between specific capacitance and loading mass. MnO species have intrinsically poor electrical conductivity, and current structural designs are not sophisticated enough to accommodate enough redox-active sites. Recent studies have certainly made progress in increasing capacitance through making use of electrically conductive components and controlling the morphology of the MnO species to expose more surface area. To increase the capacitance of MnO electrodes to the largest extent without limiting loading mass, further structural design at the nanoscale and manipulation of the electrically conductive component are required. An ideal nanostructure is proposed to guide future research toward closing the gap between achieved and theoretical capacitance, without limiting the loading mass.

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Section: Mnox‐based Hybrid Electrodes For Supercapacitorsmentioning

confidence: 99%

Manganese‐Oxide‐Based Electrode Materials for Energy Storage Applications: How Close Are We to the Theoretical Capacitance?

Wang

2018

Advanced Materials

109

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“…To develop high performance supercapacitors, recent researches have focused on low fabrication cost, high energy density and environmentally benign materials [4][5][6][7]. Manganese oxides in various forms have been extensively studied as electrode materials for supercapacitors, owing to their high energy density, abundance of raw materials, and environmental friendly feature [8][9][10][11][12][13][14][15]. However, the performance of Manganese oxides as pseudocapacitor material is hindered by their poor electrical conductivity and mechanical instability [16].…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Manganese oxide Films for High performance Supercapacitors

Fang¹

2018

International Journal of Electrochemical Science

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Nanostructured manganese oxide films, including continuous coating, nanoflower film and nanowall array, were electrodeposited on nickel foils via anodic electrodeposition. The as-prepared samples were tested as electrodes for supercapacitors and excellent capacitive performances were achieved. Among them, the nanowall array, which was composed of interconnected ultrathin nanosheets, exhibited the highest specific capacitance of 327 F g-1 at 1 A g-1. The specific capacitance could retain as high as 317 F g-1 after 1000 cycles. The superior capacitance performance can be attributed to its unique nanoporous structure which facilitates fast ion transportation.

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“…Sol-gel method is an effective and environment-friendly approach to prepared nano-MnO 2 , while avoiding the aboved disadvantages. It was reported that nano-MnO 2 as electrode materials could significantly improve the capacitance [4,5] . Wei H and colleagues [6] have prepared one-dimensional nanostructured α-MnO 2 , which is a promising candidate of electrode materials for high effective supercapacitors, via facile hydrothermal synthesis.…”

Section: Introductionmentioning

confidence: 99%

Towards Enhanced Electrochemical Capacitance with Preparation of La-doped MnO2 Nanoparticles

Zhao¹,

Hou²,

Yang³

et al. 2017

Proceedings of the 2016 International Forum on Mechanical, Control and Automation (IFMCA 2016)

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Abstract. La-doped MnO 2 nanoparticles were synthesized by a facile sol-gel method.Using XRD and SEM to analyze the structure and morphology of the obtained nano-MnO 2 , the results show that it exhibit α-MnO 2 crystal form with some amorphous structure and irregular granular morphology with size of 150-300 nm. Through electrochemical tests of CV and GCD, La-doped nano-MnO 2 presents enhanced electrochemical capacitance with a specific capacitance of 168.7 F g -1 , much higher than that of pure nano-MnO 2 prepared at the same conditions.

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Self-grown MnO 2 nanosheets on carbon fiber paper as high-performance supercapacitors electrodes

Cited by 46 publications

References 43 publications

Manganese‐Oxide‐Based Electrode Materials for Energy Storage Applications: How Close Are We to the Theoretical Capacitance?

Manganese‐Oxide‐Based Electrode Materials for Energy Storage Applications: How Close Are We to the Theoretical Capacitance?

Nanostructured Manganese oxide Films for High performance Supercapacitors

Towards Enhanced Electrochemical Capacitance with Preparation of La-doped MnO2 Nanoparticles

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