Synthesis and Supercapacitor Performance of Polyaniline/Nitrogen-Doped Ordered Mesoporous Carbon Composites

Xie, Kangjun; Zhang, Manman; Yang, Yang; Zhao, L.; Qi, Wei

doi:10.1186/s11671-018-2577-3

Cited by 42 publications

(16 citation statements)

References 26 publications

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“…Furthermore, the combined features of both PANI and N‐rGO greatly enhanced the performance of the composite material. The specific capacitance and the rate capabilities obtained for the PANI/N‐rGO composite are comparable with the results obtained from the similar electrode materials studied in the two and three‐electrode systems as shown in Table 2 27,59–62 . Further, the specific energy and specific power are calculated for PANI/N‐rGO composite at various current density and the corresponding Ragone plot is given in Figure 8A.…”

Section: Resultssupporting

confidence: 81%

A robust approach for designing N‐doped reduced graphene oxide/polyaniline nanocomposite‐based electrodes for efficient flexible supercapacitors

Macherla

Singh

Kumari

et al. 2022

Polymers for Advanced Techs

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2D multilayered reduced graphene oxide (rGO) has received enormous research interest as a potential electrode material for flexible supercapacitor (FSC), owing to its excellent electrochemical and mechanical properties. However, rGO suffers from the restacking of graphene (GN) layers, lower electrical conductivity resulting from the residual oxygen functional groups and the relatively poor real-time electrochemical performance. One of the finest ways overcoming the drawbacks of rGO by doping heteroatom into GN network and surface modification to enhance its electrochemical properties. In this work, a simple and robust approach for designing an efficient and high-performance flexible electrode with nitrogen-doped reduced graphene oxide (N-rGO) framework coupled with surface modification through in situ chemical polymerization with aniline to form a long-range interconnected polyaniline (PANI) nanostructure is presented. In a two-electrode system, PANI/N-rGO flexible electrode has delivered a higher specific capacitance of 322 F g À1 at a current density of 1 A g À1 . Further, the composite exhibited notable cyclic stability over 1000 charge-discharge cycles. Surface-modified in-situ grown PANI nanostructures on N-rGO nanosheets prevent the volume changes that occur in PANI during the charge-discharge process, and offer a higher charge transportation rate throughout the surface area. As a result of enhanced electrochemical properties, PANI/N-rGO composites provide a feasible route for designing FSCs.

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Section: Resultssupporting

confidence: 81%

A robust approach for designing N‐doped reduced graphene oxide/polyaniline nanocomposite‐based electrodes for efficient flexible supercapacitors

Macherla

Singh

Kumari

et al. 2022

Polymers for Advanced Techs

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“…Figure 6 a-c illustrate the SEM micrographs of Sr–H 3 PO 4 , Sr–KOH and Sr–Na 2 CO 3 at the magnification of x2.0k showing nice morphologies with pores. The evaporation of activating agents H 3 PO 4 , KOH and Na 2 CO 3 during carbonization process leads to the pore development on the surfaces of the ACs [ 49 ]. Among them, H 3 PO 4 activated carbon sample i.e.…”

Section: Resultsmentioning

confidence: 99%

“…also showed clear honey comb like structure with extensive porosity. the surfaces of the ACs [49]. Among them, H 3 PO 4 activated carbon sample i.e.…”

Section: N 2 Adsorption/desorption Isothermmentioning

confidence: 99%

The effects of different activating agents on the physical and electrochemical properties of activated carbon electrodes fabricated from wood-dust of Shorea robusta

Shrestha

Rajbhandari

2021

Heliyon

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This study focuses on the effects of activating agents on the physical and electrochemical properties of activated carbon (AC) electrodes, fabricated from wood dust of Shorea robusta . Three different activating agents namely H 3 PO 4, KOH and Na 2 CO 3 have been used to prepare ACs, which were named as: Sr–H 3 PO 4 , Sr–KOH and Sr–Na 2 CO 3 . The ACs were characterized by TGA/DSC, XRD, Raman, SEM, FTIR and BET. All the as prepared ACs were found to be amorphous in nature. The oxygen surface functionality was developed at the surface. The surface area of Sr–H 3 PO 4 , Sr–KOH and Sr–Na 2 CO 3 were found to be 1269.5 m 2 /g, 280.6 m 2 /g and 58.9 m 2 /g respectively. The activated carbon-electrodes were then fabricated and supercapacitive performances were evaluated by “three electrode system” in aqueous 6M KOH using cyclic voltammetry (CV), galvanostatic charge discharge (GCD) and electrochemical impedance spectroscopy (EIS).The GCD performed at 1A/g revealed the specific capacitance values were 136.3 F/g, 42.2 F/g and 59.1 F/g for Sr–H 3 PO 4 , Sr–KOH and Sr–Na 2 CO 3 -electrodes, respectively. Energy density for Sr–H 3 PO 4 electrode was found to be 3.0 Wh/kg at 99.6 W/kg power densities. Moreover, it also displayed imposing cyclic stability of about 96.9 %, 89.5 % and 78.5 % after 1000 cycles of charge/discharge respectively. The overall electrochemical performance of Sr–H 3 PO 4 showed outstanding supercapacitive performances demonstrating the high possibility of this material to be used for the EDLC application in supercapacitive energy storage. The Nyquist plot also showed the lowest internal resistance of about 0.4 Ω for Sr–H 3 PO 4 electrode.

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“…The decrease in specific capacitance on increasing current densities is due to the higher electrolyte diffuse hindrance that reduces the active site utilization ratio at high current density [40]. However, the CMK-PANi composite shows somewhat appreciable specific capacitance in KHCO 3 system, when compared to reported composites (Table 2) [38,[42][43][44][45][46][47][48][49][50][51]. Figure 11c shows Nyquist plots of CMK-PANi composite from electrochemical impedance spectroscopy (EIS) employed at DC bias of monitor.…”

Section: Electrochemical Propertiesmentioning

confidence: 97%

Synthesis of mesoporous carbon-polymeric hybrid material for energy storage application

et al. 2019

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The overarching goal of this study is fabrication and evaluation of mesoporous carbon-polymeric hybrid electrode materials derived by in situ polymerization of aniline on mesoporous carbon. The mesoporous carbon (CMK-3) was prepared using mesoporous silica SBA-15 as a hard template. The characteristics and functional groups of synthesized mesoporous carbon-polyaniline composite confirmed by Fourier-transform infrared spectroscopy, Raman spectroscopy, Thermo gravimetric analysis, X-ray powder diffraction, and BET surface area analysis. The electrochemical performance of carbon-polyaniline composite was evaluated through its supercapacitor behavior in the electrolyte Potassium bicarbonate (KHCO 3 ). Synthesized carbon-polyaniline was used as the working electrode after modification with Nafion solution on glassy carbon electrode. The hybrid material reveals high current density with increased storage efficiency due to uniform confinement of polyaniline into the pore structure of CMK-3. The high specific capacitance of 487 F/g was observed on carbon-polyaniline electrode at 0.2 A/g in KHCO 3 , and also reveals better stability, retained 90% efficiency after 1000 charge-discharge cycles. Thus, the prepared carbon-polyaniline composite exhibit as a good candidate in supercapacitor application.

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Synthesis and Supercapacitor Performance of Polyaniline/Nitrogen-Doped Ordered Mesoporous Carbon Composites

Cited by 42 publications

References 26 publications

A robust approach for designing N‐doped reduced graphene oxide/polyaniline nanocomposite‐based electrodes for efficient flexible supercapacitors

A robust approach for designing N‐doped reduced graphene oxide/polyaniline nanocomposite‐based electrodes for efficient flexible supercapacitors

The effects of different activating agents on the physical and electrochemical properties of activated carbon electrodes fabricated from wood-dust of Shorea robusta

Synthesis of mesoporous carbon-polymeric hybrid material for energy storage application

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