Development of redox deposition of birnessite-type MnO2 on activated carbon as high-performance electrode for hybrid supercapacitors

Zhang, Xiong; Sun, Xianzhong; Zhang, Haitao; Zhang, Dacheng; Ma, Yanwei

doi:10.1016/j.matchemphys.2012.09.023

Cited by 70 publications

(14 citation statements)

References 53 publications

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“…38.1 W h Kg -1 ) was observed for the SmRGO2 at the power density of 500 W Kg -1 . The value was found to be considerably higher than those reported for the same electrode in the literature [44][45][46]. Upon increasing power density, the energy density values of this electrode decreased lower sharply than the other composite electrodes, indicating the higher available active sites in SmRGO2.…”

Section: Tablecontrasting

confidence: 61%

Anchoring samarium oxide nanoparticles on reduced graphene oxide for high-performance supercapacitor

Dezfuli

Ganjali

Naderi

2017

Applied Surface Science

103

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We have synthesized Sm 2 O 3 nanoparticles (SmNs) and anchored them onto the surface of reduced graphene oxide (RGO) through a self-assembly thereof by utilizing a facile sonochemical procedure. The nanomaterials were characterized by means of powder X-ray diffraction (XRD), Field-emission scanning electron microscopy (FE-SEM), fourier transform infrared spectroscopy (FT-IR) spectra, and X-ray photoelectron spectroscopy (XPS). As the next step, the supercapacitive behavior of the resulting nanocomposites were investigated when used as electrode material, through with cyclic voltammetric (CV), galvanostatic charge-discharge and electrochemical impedance spectroscopy (EIS) techniques. The SmNs decorated RGO (SmN-RGO) nanocomposites were found to possess a specific capacitance (SC) of 321 F g-1 when used in a 0.5 M Na 2 SO 4 solution as an electrolyte, in a scan rate of 2 mV s-1. The SC of the SmN-RGO based electrodes were also found to be 268 F g-1 at a current density of 2 A g-1 through galvanostatic charge-discharge tests. The outstanding properties of the SmN-RGOs were attributed to synergy of the high charge mobility of SmNs and the flexibility of the sheets of RGOs. Additionally, the nano-composite revealed a unique cycling durability (maintaining 99 % of its SC even after 4000 cycles).

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Section: Tablecontrasting

confidence: 61%

Anchoring samarium oxide nanoparticles on reduced graphene oxide for high-performance supercapacitor

Dezfuli

Ganjali

Naderi

2017

Applied Surface Science

103

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“…In the ECs of Carbon/MnO 2 with liquid electrolytes, specific discharge capacitances are reported to be about 40~50 F g -1 at room temperature [27][28][29].…”

Section: Fabrication and Characterization Of All-solid-state Ecsmentioning

confidence: 99%

All-solid-state electrochemical capacitors using MnO2/carbon nanotube composite electrode

Shimamoto

Tadanaga

Tatsumisago

2013

Electrochimica Acta

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MnO 2 /carbon nanotube (CNT) composite was prepared by a solution process. In the obtained MnO 2 -CNT composite, MnO 2 particles were well-dispersed on CNTs. The specific capacitance of the MnO 2 -CNT composite in an aqueous electrolyte was higher than that of MnO 2 and CNT. All-solid-state electrochemical capacitors (ECs) were fabricated using the MnO 2 -CNT composite as a positive electrode, activated carbon powder as a negative electrode, and phosphosilicate gel as an electrolyte. The obtained all-solid-state ECs operated at the temperature range between -30⁰C and 100⁰C. The specific discharge capacitance and the rate ability of the capacitors were improved by elevating temperature. In addition, the fabricated all-solid-state ECs exhibited excellent cycle performance at the temperature range between -30⁰C and 100⁰C for 20,000 cycles.These results indicate that all-solid-state ECs using MnO 2 are promising energy storage devices with excellent stability and high reliability at the wide range of temperatures.

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“…Fig. 5 [12,17,19,28], the E of 22% CB/22% EG/MnO 2 nanocomposite electrode is much higher at the same P. More importantly, the E has a low decrease with the increase of P for the electrodes. Based on these results, it could be suggested that the CB/EG/MnO 2 nanocomposite electrodes are suitable materials for making ESs.…”

Section: Electrochemical Characterizationmentioning

confidence: 87%

“…To solve these problems, it has composited carbon materials and extensive research on binary composites is ongoing [8e10]. For examples carbon black [11,12], graphene [13e15], graphene oxide [16], activated carbon [17], exfoliated graphite [18,19], mesoporous carbon [20,21], and carbon nanotubes [22e24] have been incorporated into MnO 2 to improve the electrical conductivity ,.…”

Section: Introductionmentioning

confidence: 99%

Supercapacitive evaluation of carbon black/exfoliated graphite/MnO2 ternary nanocomposite electrode by continuous cyclic voltammetry

Naderi

Norouzi

2015

Materials Chemistry and Physics

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Development of redox deposition of birnessite-type MnO2 on activated carbon as high-performance electrode for hybrid supercapacitors

Cited by 70 publications

References 53 publications

Anchoring samarium oxide nanoparticles on reduced graphene oxide for high-performance supercapacitor

Anchoring samarium oxide nanoparticles on reduced graphene oxide for high-performance supercapacitor

All-solid-state electrochemical capacitors using MnO2/carbon nanotube composite electrode

Supercapacitive evaluation of carbon black/exfoliated graphite/MnO2 ternary nanocomposite electrode by continuous cyclic voltammetry

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