N-doped porous reduced graphene oxide as an efficient electrode material for high performance flexible solid-state supercapacitor

Singh, Santosh K.; Dhavale, Vishal M.; Boukherroub, Rabah; Kurungot, Sreekumar; Szunerits, Sabine

doi:10.1016/j.apmt.2016.10.002

Cited by 76 publications

(26 citation statements)

References 63 publications

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“…The intercept of the X-axis represents the equivalent series resistance, which is related to the resistance of the electrode. [43,44] The equivalent series resistance of the MXene/AuNPs-2 (1.4 Ω) shows the lowest resistance value compared to those of the Ti 3 C 2 T x (2.5 Ω), MXene/AuNPs-1 (1.5 Ω) and MXene/AuNPs-3 (1.4 Ω) electrodes. The semicircle represents the charge transfer resistance (R ct ) at the electrode−electrolyte interface, which are 0.08 Ω, 0.07 Ω, 0.06Ω and 0.08Ω…”

Section: Characterizationmentioning

confidence: 99%

In Situ Reduced MXene/AuNPs Composite Toward Enhanced Charging/discharging and Specific Capacitance

Zheng

Yang

et al. 2021

Preprint

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In this work, gold nanoparticles (AuNPs) decorated Ti3C2Tx nanosheets (MXene/AuNPs composite) are fabricated through a self-reduction reaction of Ti3C2Tx nanosheets with HAuCl4 aqueous solution. The obtained composite is characterized as AuNPs with the diameter of about 20 nm uniformly disperse on Ti3C2Tx nanosheets without aggregation. The composite (MXene decorated on 4.8 wt.% AuNPs) is further employed to construct supercapacitor for the first time with a higher specific capacitance of 278 F g-1 at 5 mV s-1 than that of pure Ti3C2Tx and 95% of cyclic stability after 10000 cycles. Furthermore, MXene/AuNPs composite symmetric supercapacitor with filter paper as separator and H2SO4 as electrolyte, respectively, is assembled. The supercapacitor exhibits a high volumetric energy density of 8.82 Wh L-1 at a power density of 264.6 W L-1 and ultrafast-charging/discharging performance. It exhibits as a promising candidate applied in integrated and flexible supercapacitors.

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Section: Characterizationmentioning

confidence: 99%

In Situ Reduced MXene/AuNPs Composite Toward Enhanced Charging/discharging and Specific Capacitance

Zheng

Yang

et al. 2021

Preprint

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“…The synthesis of prGO was achieved via dispersion of rGO powder (100 mg) in 30% H 2 O 2 (100 mL), ultrasonicating for 30 min and heating for 12 h at 60 °C. The obtained solution was filtered and the recovered prGO powder was dialyzed to remove H 2 O 2 and to separate from small sized graphene quantum dots [22].…”

Section: Synthesis Of N-prgomentioning

confidence: 99%

“On the Detection of cTnI - A Comparison of Surface-Plasmon Optical -, Electrochemical -, and Electronic Sensing Concepts”

Rodrigues¹,

Mishyn²,

Bozdogan³

et al. 2021

ACMCR

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“…The decrease of Csp is caused by faster ion migration at a higher current density, which accelerates the polarisation and depolarisation process of the electrode. This will result in the incomplete utilisation of ions on the electrode surface [22]. Electrochemical impedance spectroscopy (EIS) was performed to evaluate the resistive behavior of all the composites.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Supercapacitive Performance of N-Doped Graphene/Mn3O4/Fe3O4 as an Electrode Material

et al. 2019

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Nitrogen-doped graphene (NDG) and mixed metal oxides have been attracting much attention as the combination of these materials resulted in enhanced electrochemical properties. In this study, a composite of nitrogen-doped graphene/manganese oxide/iron oxide (NDG/Mn3O4/Fe3O4) for a supercapacitor was prepared through the hydrothermal method, followed by freeze-drying. Field emission scanning electron microscopy (FESEM) images revealed that the NDG/Mn3O4/Fe3O4 composite displayed wrinkled-like sheets morphology with Mn3O4 and Fe3O4 particles attached on the surface of NDG. The presence of NDG, Mn3O4, and Fe3O4 was characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The electrochemical studies revealed that the NDG/Mn3O4/Fe3O4 composite exhibited the highest specific capacitance (158.46 F/g) compared to NDG/Fe3O4 (130.41 F/g), NDG/Mn3O4 (147.55 F/g), and NDG (74.35 F/g) in 1 M Na2SO4 at a scan rate of 50 mV/s due to the synergistic effect between bimetallic oxides, which provide richer redox reaction and high conductivity. The galvanostatic charge discharge (GCD) result demonstrated that, at a current density of 0.5 A/g, the discharging time of NDG/Mn3O4/Fe3O4 is the longest compared to NDG/Mn3O4 and NDG/Fe3O4, indicating that it had the largest charge storage capacity. NDG/Mn3O4/Fe3O4 also exhibited the smallest resistance of charge transfer (Rct) value (1.35 Ω), showing its excellent charge transfer behavior at the interface region and good cyclic stability by manifesting a capacity retention of 100.4%, even after 5000 cycles.

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N-doped porous reduced graphene oxide as an efficient electrode material for high performance flexible solid-state supercapacitor

Cited by 76 publications

References 63 publications

In Situ Reduced MXene/AuNPs Composite Toward Enhanced Charging/discharging and Specific Capacitance

In Situ Reduced MXene/AuNPs Composite Toward Enhanced Charging/discharging and Specific Capacitance

“On the Detection of cTnI - A Comparison of Surface-Plasmon Optical -, Electrochemical -, and Electronic Sensing Concepts”

Supercapacitive Performance of N-Doped Graphene/Mn3O4/Fe3O4 as an Electrode Material

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N-doped porous reduced graphene oxide as an efficient electrode material for high performance flexible solid-state supercapacitor

Cited by 76 publications

References 63 publications

In Situ Reduced MXene/AuNPs&nbsp;Composite Toward Enhanced Charging/discharging and Specific Capacitance

In Situ Reduced MXene/AuNPs&nbsp;Composite Toward Enhanced Charging/discharging and Specific Capacitance

“On the Detection of cTnI - A Comparison of Surface-Plasmon Optical -, Electrochemical -, and Electronic Sensing Concepts”

Supercapacitive Performance of N-Doped Graphene/Mn3O4/Fe3O4 as an Electrode Material

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Product

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In Situ Reduced MXene/AuNPs Composite Toward Enhanced Charging/discharging and Specific Capacitance

In Situ Reduced MXene/AuNPs Composite Toward Enhanced Charging/discharging and Specific Capacitance