Facile synthesis of sandwich-like polyaniline/boron-doped graphene nano hybrid for supercapacitors

Hao, Qingli; Xia, Xifeng; Lei, Wu; Wang, Wenjuan; Qiu, Jieshan

doi:10.1016/j.carbon.2014.09.090

Cited by 221 publications

(95 citation statements)

References 50 publications

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“…Only considering the specific surface area and pore size distribution without regard to other factors, PEA-Zn-700, PEA-Zn-700-40, PEA-Zn-800-40, and PANIZn-700 with moderate surface areas and pore volumes, mesopore or wider micropore size distributions are expected to show high-rate performance as the electrode materials for supercapacitors. [11,15,17,20,44] Graphitization occurs at such a low temperature, indicating that PNPEA-derived carbons can be more easily graphitized. For PEA-700, few pores can be observed from its HR-TEM image.…”

Section: Resultsmentioning

confidence: 99%

Functional Groups and Pore Size Distribution Do Matter to Hierarchically Porous Carbons as High-Rate-Performance Supercapacitors

et al. 2016

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A series of nitrogen and oxygen enriched porous carbons are prepared from poly-N-phenylethanolamine (PNPEA) and polyaniline (PANI) conducting polymers through pyrolysis, chemical activation, and oxidation processes. Ar or N 2 -adsorption, FT-IR, and X-ray photoelectron spectroscopy are used to characterize the surface areas, pore volumes, surface chemical compositions, and oxygen and nitrogen content. Mikhail and Brunauer micropore analytical method (MP method) is successfully used to analyze the micropore size distribution of the samples. The electrochemical behaviour of the samples is studied in two-and three-electrode cells. The contribution of pseudocapacitance is confirmed by cyclic voltammetry and galvanostatic tests performed in acidic (H 2 SO 4 ) and basic (KOH) media. The potential drop and the equivalent series resistance value certify that the samples with wide micropore size distribution possess low interface resistances. A sample with a BET surface area of 760 m 2 g -1 , nitrogen content of 3.02 at.%, oxygen content of 16.65 at.%, and a wide micropore size distribution, presents the best performance, reaching a value of 370 F g -1 at 0.5 A g -1 and 248 F g -1 at 30 A g -1 , and maintaining capacitance retention ration of 96% at 1 A g -1 (over 1000 cycles) and 92% at 30 A g -1 (over 10000 cycles), respectively. The results obtained for all the samples agree with correlation among capacitance, functional group, and porosity, which indicates that an appropriate selection of the surface chemistry, a reasonable pore size distribution, and a moderate BET surface area, may be promising to achieve high-rate-performance supercapacitors.

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Section: Resultsmentioning

confidence: 99%

Functional Groups and Pore Size Distribution Do Matter to Hierarchically Porous Carbons as High-Rate-Performance Supercapacitors

et al. 2016

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“…The wrapping with rGO was done to provide mechanical strength since PANI nanorods without rGO incorporation were more prone to shrinking and swelling which can affect long term cycling stability of the electrode . The rGO increased electrical conductivity and plays an important role in enhancing the capacitance . However, incorporation of rGO restricts charge transfer channels at a high current density which decreases the rate capability of the electrode .…”

Section: Flexible Carbon Cloth‐based Hybrids For Electrochemical Supementioning

confidence: 99%

Carbon Cloth‐based Hybrid Materials as Flexible Electrochemical Supercapacitors

et al. 2019

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Carbon cloths are the important materials composed of woven carbon fibres having the diameters in the range of 5–10 μm. These materials have been investigated for innumerable applications such as supercapacitors (symmetric and asymmetric), batteries, solar cells, and catalysis. They are found to be the best supports as supercapacitive materials by providing high surface area, conductivity and flexibility compared to much widely used substrate materials such as Ni foam and 1D Fe nanowires. High conductivity and surface area of carbon cloths enable ion diffusion and cause decrease in charge transfer resistance, resulting in an increase of specific capacitance of specific electrodes. Several supercapacitive metal oxides, chalcogenides, phosphides, MXenes, carbon nanotubes, graphene, and conductive polymers have been incorporated into carbon cloths to improve their energy storage activity. Further modification of carbon cloth surface via oxidation, doping and by the growth of different nanostructures is also helpful as it increases the electroactive surface area necessary for electrochemical interaction. The present review mainly focuses on the development of flexible supercapacitors using carbon cloth‐based substrate materials. Such flexible supercapacitors can be further utilized for an uninterrupted and steady power supply to wearable and portable electronic devices.

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“…The patterns of the fitting peak treatment for the XPS spectra of C 1s in GO, rGO, DMC‐rGO are presented in Figure . It shows that the C 1s peak of GO and rGO can be divided into four types of carbon bonds: CC/CH, (∼284.8 eV), CO (∼286.5 eV), CO (∼287.7 eV), COO (∼289.0 eV) [Figure (a,b)] . It is also observed that the relative intensities of oxygen functionalities in rGO are obviously much weaker than those of GO.…”

Section: Resultsmentioning

confidence: 99%

Ionic liquid‐modified graphene/poly(vinyl alcohol) composite with enhanced properties

Wang

Fan

et al. 2017

J of Applied Polymer Sci

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How to preserve the structure integrity of graphene while enhance its dispersion and compatibility in matrix attracts the attention of researchers in graphene/polymer nanocomposite field. In this paper, methacryloxyethyltrimethyl ammonium chloride (DMC), a kind of ionic liquids, was first used to non‐covalently functionalize graphene in the process of graphene oxide (GO) reduction. The as‐modified graphene (DMC‐rGO) was further incorporated into poly(vinyl alcohol) (PVA) matrix by solution casting technique to fabricate DMC‐rGO/PVA composites. The structure and properties of the obtained DMC‐rGO were investigated by X‐ray diffraction analysis (XRD), X‐ray Photoelectron Spectroscopy (XPS), Transmission Electron Microscope (TEM), Atomic force microscopy (AFM), and Raman test. The results showed that graphene could be successfully modified by DMC through ionic–π interaction and the structure integrity of the graphene could be reserved by this non‐covalently approach. Furthermore, after co‐reduction process, some hydroxyl groups were introduced into DMC‐rGO. In virtue of these intrinsic properties of DMC‐rGO, the fabricated DMC‐rGO/PVA composites exhibit considerable enhancements in mechanical properties and remarkable improvements in thermal stability, as well as the enhancement in electrical conductivity at low DMC‐rGO loading. This simple modification approach gives a new opportunity to improve the performances of graphene/polymer composites. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45006.

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Facile synthesis of sandwich-like polyaniline/boron-doped graphene nano hybrid for supercapacitors

Cited by 221 publications

References 50 publications

Functional Groups and Pore Size Distribution Do Matter to Hierarchically Porous Carbons as High-Rate-Performance Supercapacitors

Functional Groups and Pore Size Distribution Do Matter to Hierarchically Porous Carbons as High-Rate-Performance Supercapacitors

Carbon Cloth‐based Hybrid Materials as Flexible Electrochemical Supercapacitors

Ionic liquid‐modified graphene/poly(vinyl alcohol) composite with enhanced properties

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