Nanostructured MnO2 as Electrode Materials for Energy Storage

Julien, C.; Mauger, A.

doi:10.3390/nano7110396

Cited by 223 publications

(106 citation statements)

References 197 publications

Supporting

Mentioning

105

Contrasting

Order By: Relevance

“…Partial list of the material, the electrolyte for testing the performance, and the capacitance as well as the cycling stability for the PPy-based energy storage electrodes and devices. CF@PPy@rGO 188 F/g@2 mV/s 76%@5000 cycles [47] CNY@PPy@rGO 111.5 mF/cm@2 mV/s 86%@10000 cycles [36] UEF@CNT@PPy 67 mF/cm 2 @5 mV/s - [38] CF@CNT@PPy 3.5 mF/cm@2 mV/s 92%@5000 cycles [37] CF@PPy 796.7 mF/g@2 mV/s 30 F/g@0.2 A/g 70%@3000 cycles TW CNY = carbon nanofibers yarns; rGO = reduced graphene oxide; CF = carbon fiber; CNT = carbon nanotube; UEF = urethane elastic fiber; TW = This work. a This value was obtained by using 40 mA as the applied current and 10 min as the applied duration.…”

Section: Electrochemical Performance Analysis Of the Fsc With Cf@ppy mentioning

confidence: 99%

“…In this work, PPy was coated on CF (CF@PPy) by using the electropolymerization technique and applied as the energy storage electrode for FSC. The PPy has been well applied as the efficient active material for SC, due to its high conductivity, facile redox activity, processability, and low environmental impact features [36][37][38][39]. The synthesizing parameters such as electrolyte concentration, participation of the supporting electrolyte, the electropolymerization applied current, and time, as well as the electropolymerization system design were carefully investigated to achieve assemble the efficient FSC with excellent energy storage electrodes based on PPy.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Systematic Design of Polypyrrole/Carbon Fiber Electrodes for Efficient Flexible Fiber-Type Solid-State Supercapacitors

Sung

Lin

2020

Nanomaterials

View full text Add to dashboard Cite

Fiber-type supercapacitors (FSC) have attracted much attention as efficient energy storage devices for soft electronics. This study proposes the synthesis of polypyrrole (PPy) on carbon fiber (CF) using electropolymerization as the energy storage electrode for FSC. Effects of the electrolyte, applied current, and time of electropolymerization for synthesizing PPy on CF are investigated. The configuration of the electrochemical system is also studied to better understand the electropolymerization of PPy. The highest specific capacitance (CM) of 308.2 F/g are obtained for the PPy electrode prepared using 0.5 M pyrrole and 0.3 M NaClO4 as the electrolyte at 40 mA for 20 min. The FSC assembled with PPy electrodes and the polyvinyl alcohol/H3PO4 gel electrolyte shows a CM value of 30 F/g and the energy density of 5.87 Wh/kg at the power density of 60.0 W/kg. Excellent cycling stability with CM retention of 70% and Coulombic efficiency higher than 98% in 3000 times charge/discharge process, and the good bending capability with CM retention of 153% and 148%, respectively, under the bending angle of 180° and the bending times of 600 are achieved. This work gives deeper understanding of electropolymerization and provides recipes for fabricating an efficient PPy electrode for soft energy storage devices.

show abstract

Section: Electrochemical Performance Analysis Of the Fsc With Cf@ppy mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Systematic Design of Polypyrrole/Carbon Fiber Electrodes for Efficient Flexible Fiber-Type Solid-State Supercapacitors

Sung

Lin

2020

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…Manganese dioxide (MDO) is an abundant, rather cheap and green material, which is not only used in primary lithium batteries [6], but also developed as advanced electrode material for Li-ion, Li-sulfur or Li-air secondary batteries [7][8][9][10][11][12][13]. It can deliver a theoretical capacity of~320 mAh g −1 based on the transfer of one electron per formula in the potential range of 1.5-4.0 V (vs. Li + /Li).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of High Surface Area α-KyMnO2 Nanoneedles Using Extract of Broccoli as Bioactive Reducing Agent and Application in Lithium Battery

Hashem

Abuzeid

Winter³

et al. 2020

Materials

Self Cite

View full text Add to dashboard Cite

With the aim to reduce the entire cost of lithium-ion batteries and to diminish the environmental impact, the extract of broccoli is used as a strong benign reducing agent for potassium permanganate to synthesize α-KyMnO2 cathode material with pure nanostructured phase. Material purity is confirmed by X-ray powder diffraction and thermogravimetric analyses. Images of transmission electron microscopy show samples with a spider-net shape consisting of very fine interconnected nanoneedles. The nanostructure is characterized by crystallite of 4.4 nm in diameter and large surface area of 160.7 m2 g−1. The material delivers an initial capacity of 211 mAh g−1 with high Coulombic efficiency of 99% and 82% capacity retention after 100 cycles. Thus, α-KyMnO2 synthesized via a green process exhibits very promising electrochemical performance in terms of initial capacity, cycling stability and rate capability.

show abstract

“…These features have led to one-step fabrication of nanoparticles at high rates [4]. In fact, nanoparticles have been in high demand [5,6], as are nanowires [7,8], for various applications. Better techniques must be developed to control nanoparticle production rate and size by understanding the mechanisms of nanoparticle growth and transport processes.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Correlation between Arc Plasma Fluctuation and Nanoparticle Growth–Transport under Atmospheric Pressure

2019

View full text Add to dashboard Cite

A time-dependent two-dimensional (2D) axisymmetric simulation was conducted for arc plasma with dynamically fluctuating fluid generating iron nanoparticles in a direct-current discharge condition. The nonequilibrium process of simultaneous growth and transport of nanoparticles is simulated using a simple model with a low computational cost. To ascertain fluid dynamic instability and steep gradients in plasma temperature and particle distributions, a highly accurate method is adopted for computation. The core region of the arc plasma is almost stationary, whereas the fringe fluctuates because of fluid dynamic instability between the arc plasma and the shielding gas. In the downstream region, the vapor molecules decrease by condensation. The nanoparticles decrease by coagulation. These results suggest that both of the simultaneous processes make important contributions to particle growth. The fluctuation of nanoparticle number density in a distant region exhibits stronger correlation with the temperature fluctuation at the plasma fringe. The correlation analysis results suggest that the distribution of growing nanoparticles distant from the arc plasma can be controlled via control of temperature fluctuation at the arc plasma fringe.

show abstract

Nanostructured MnO2 as Electrode Materials for Energy Storage

Cited by 223 publications

References 197 publications

Systematic Design of Polypyrrole/Carbon Fiber Electrodes for Efficient Flexible Fiber-Type Solid-State Supercapacitors

Systematic Design of Polypyrrole/Carbon Fiber Electrodes for Efficient Flexible Fiber-Type Solid-State Supercapacitors

Synthesis of High Surface Area α-KyMnO2 Nanoneedles Using Extract of Broccoli as Bioactive Reducing Agent and Application in Lithium Battery

Numerical Analysis of the Correlation between Arc Plasma Fluctuation and Nanoparticle Growth–Transport under Atmospheric Pressure

Contact Info

Product

Resources

About