Morphology controlled MnO 2 electrodeposited on carbon fiber paper for high-performance supercapacitors

Ye, Zhiguo; Li, Tao; Ma, Guiping; Peng, Xuerong; Zhao, Jun

doi:10.1016/j.jpowsour.2017.03.104

Cited by 95 publications

(38 citation statements)

References 39 publications

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“…However, the capacitance retention of the former (65.5%) is 134 times larger than that of the latter (only 0.49%) when the current density is increased from 1 to 20 mA cm −2 ( Table S2). The inferior rate performance of the MnO 2 -25/GCC electrode is attributed to the low intrinsic conductivity of MnO 2 and elongated electron transport [22], MnO 2 /CNT/carbon tape [23], MnO 2 /CNT film [24], MnO 2 /anodic aluminum oxide (AAO) [25], MnO 2 /Ni nanorod array [26], MnO 2 /Ni foil [27], MnO 2 /CC [15]. h The schematic illustration of the CNT/MnO 2 -25/GCC structure.…”

Section: Electrochemical Performance Of Electrodes In a Three-electromentioning

confidence: 99%

CNT/High Mass Loading MnO2/Graphene-Grafted Carbon Cloth Electrodes for High-Energy Asymmetric Supercapacitors

et al. 2019

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Section: Electrochemical Performance Of Electrodes In a Three-electromentioning

confidence: 99%

CNT/High Mass Loading MnO2/Graphene-Grafted Carbon Cloth Electrodes for High-Energy Asymmetric Supercapacitors

et al. 2019

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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

104

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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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“…3,4 Referring to electrode materials, the activated carbon materials, with emphasis on activated carbon fibers (ACF) have been successfully explored due to their structural aspects associated with high specific area and high packing density as well as to their good electric conductivity. [5][6][7][8][9][10][11][12] In spite of these prominent aspects, ACF production with nano structures pore sizes with different textile forms can be explored. 4 However, there are not many studies of supercapacitor electrodes on activated carbon felt.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the studies involve activated carbons, commercial structural carbon fibers and other carbon materials. 7,11,[13][14][15][16] There are many studies about carbon material applied as supercapacitor electrodes relating the increase of energy and power density with the deposition of silver particles. [17][18][19][20][21][22] According to these studies, the presence of silver particles contributes to improve the electrical charge transfer, which results in an enhancement in the electrochemical performances of the composites.…”

Section: Introductionmentioning

confidence: 99%

Ag@Activated Carbon Felt Composite as Electrode for Supercapacitors and a Study of Three Different Aqueous Electrolytes

Rodrigues

Silva

Quirino³

et al. 2018

Mat. Res.

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The main challenge for the development of a high efficiency supercapacitor is the electrode material. Developing electrode materials with high specific electrical capacitance and low electrical resistance enables an increase in the energy accumulated in the device. In addition, it is expected that the electrode material presents a simple procedure for preparation having low production cost and being environmentally friendly. This work is based on the deposition of silver nanoparticles on activated carbon felt (Ag@ACF) as a supercapacitor electrode. The samples were characterized by field emission gun scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and textural analysis. Supercapacitor behavior was evaluated by galvanostatic charge-discharge curves, cyclic voltammetry and electrochemical impedance spectroscopy using a symmetrical two-electrode Swagelok type cell, and three different aqueous solution electrolytes: 2 M H 2 SO 4 , 6 M KOH and 1 M Na 2 SO 4. Ag@ACF presented a high specific capacitance in KOH, about 170 F g-1 , which makes it an interesting material for supercapacitor electrodes and it showed good specific electrical capacitance, low resistance and high cyclability.

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Morphology controlled MnO 2 electrodeposited on carbon fiber paper for high-performance supercapacitors

Cited by 95 publications

References 39 publications

CNT/High Mass Loading MnO2/Graphene-Grafted Carbon Cloth Electrodes for High-Energy Asymmetric Supercapacitors

CNT/High Mass Loading MnO2/Graphene-Grafted Carbon Cloth Electrodes for High-Energy Asymmetric Supercapacitors

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

Ag@Activated Carbon Felt Composite as Electrode for Supercapacitors and a Study of Three Different Aqueous Electrolytes

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