Morphology and structure control of amine- functionalized graphene/polyaniline composite for high-performance supercapacitors

Hou, Zhaoxia; Zou, Shengnan; Li, Jianjun

doi:10.1016/j.jallcom.2020.154390

Cited by 36 publications

(11 citation statements)

References 50 publications

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“…[36] The high-resolution XPS spec-trum of C1s in 3D GH/PANI/Ag@AgCl catalyst (Figure 4e) can be deconvoluted into four components: CÀ C/C=C (284.8 eV), C=N/CÀ N (285.1 eV), CÀ OÀ C (286.1 eV), and HOÀ C=O (289.2 eV). [37] The near disappearance of the peaks of HOÀ C=O species, and the fact that the prominent peak representing sp 2 C indicated that most C atoms were not related to O, further exhibited a sharp decrease in the number of oxygen-containing functional groups in GO, which proved that GO was well reduced during the process of 3D GH formation. [38] The N 2 adsorption-desorption isotherm results in Figure 5a indicated that the as-prepared 3D GH/PANI/Ag@AgCl composites exhibited a typical type IV curve with a distinct hysteresis loop, indicating the existence of abundant mesopores.…”

Section: Resultsmentioning

confidence: 96%

Ag@AgCl Photocatalyst Loaded on the 3D Graphene/PANI Hydrogel for the Enhanced Adsorption‐Photocatalytic Degradation and In Situ SERS Monitoring Properties

et al. 2021

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Here, 3D GH/PANI/Ag@AgCl composites were successfully synthesized by binding Ag + ions with the Cl À ions of HCldoped PANI in 3D GH/PANI and the subsequent photo-assisted reduction. Compared with 3D GH/PANI, Ag@AgCl and GO/ PANI/Ag@AgCl catalysts, the synergistic effects of porous GH network structure, conductive 1D PANI, and the localized surface plasmon resonance of Ag@AgCl, enabled 3D GH/PANI/ Ag@AgCl superior adsorption-photocatalytic degradation performance of RhB under visible-light irradiation. PL spectra and a serious of photoelectrochemical measurements were em-ployed to investigate the reasons for such enhanced photocatalytic activity. Combined with the active species trapping experiments, the possible improved photocatalytic degradation mechanism was proposed. With the prepared 3D GH/PANI/ Ag@AgCl photocatalyst itself as the substrate, real-time SERS detection of the presence of RhB and its degradation process can also be achieved. Besides these important results, easy separation and good regeneration property of 3D GH/PANI/ Ag@AgCl further make it a promising application in water purification.Recently, due to the photosensitive semiconductor characteristic of silver halide AgX (X = Cl, Br, I) and its synergistic effect with the surface plasmon resonance (SPR) of metallic Ag, the heterojunction of AgX and Ag (Ag@AgX) can exhibit high stability and highly efficient for visible light utilization. [4][5][6] Thus it has attracted considerable attention in photocatalysis processes. However, the electron-hole pairs induced by plasmon would recombine in a rapid rate during the process of transferring to the surface of Ag@AgX photocatalyst. [7][8][9] According to those pioneering researches, several strategies could be adopted to preparing multicomponent photocatalytic composites to retard the photoelectron-hole recombination, such as metal ion deposition, [10] formation of heterojunctions [11][12][13] or combination with conductive nonmetallic materials. [14,15] The inconvenience in terms of the separation and manipulation of Ag@AgX photocatalyst from the wastewater is another important factor to prevent its use. Technical limitations to recycle them not only increase the cost, but also possibly cause secondary pollution. The general strategy to solve this problem is to explore a suitable matrix to immobilize catalyst powders. [16] For all these reasons, Ag@AgXbased composite materials, such as fibrous Ag@AgCl composites, [17] rGO

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Section: Resultsmentioning

confidence: 96%

Ag@AgCl Photocatalyst Loaded on the 3D Graphene/PANI Hydrogel for the Enhanced Adsorption‐Photocatalytic Degradation and In Situ SERS Monitoring Properties

et al. 2021

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“…The uneven distribution and the agglomeration of polyaniline can also be overcome by functionalizing graphene's surface covalently or non-covalently. [38] Simultaneously, modifying the graphene surface improves the wettability of the electrode, which is favorable for double-layer formation, thus promoting charge storage processes. [39] The mechanical properties of polymeric materials are desirable for the flexible electrode.…”

Section: Current Challenges Of Polyaniline/graphene Composite Electro...mentioning

confidence: 99%

Recent Development of Polyaniline/graphene Composite Electrodes for Flexible Supercapacitor Devices

et al. 2022

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Flexible supercapacitors are attracting interest in wearable technologies as they can withstand mechanical deformations while delivering their energy storage function. Among frequently investigated electrode materials for flexible supercapacitors, polyaniline/graphene composites are favorable due to their synergistic properties that assure excellent specific capacitance, cycling stability, and high rate capability. This review highlights recent strategies to advance structural designs and synthesis methods of polyaniline/ graphene electrodes for flexible supercapacitors. Firstly, the general mechanism and feature of the flexible supercapacitor will be discussed, followed by current challenges that focus on two key aspects, structural design and synthesis of the electrode. Next, by sorting the composites based on their morphological dimensionalities (i. e., one-, two-, and threedimensional), and focusing the discussion on the two key aspects, we evaluate recent and effective strategies to develop flexible supercapacitors with polyaniline/graphene composite electrode. Finally, future perspectives are given for broader applications of the flexible supercapacitors.

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“…As aforementioned, increasing the surface area of conductive nano-fillers does help enhance the energy storage capability. Hou et al [40] developed a new composite using amine-functionalized graphene and polyaniline for high-performance supercapacitors. It was found that the morphology control of the composite does deliver a better energy storage capability.…”

Section: Other Applicationsmentioning

confidence: 99%

Tailoring specific properties of polymer-based composites by using graphene and its associated compounds

Hung

Lau

Guo³

et al. 2020

International Journal of Smart and Nano Materials

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Graphene and its associated compounds have been identified as extraordinary structural nano-fillers that can tailor the properties of new polymer-based composites with specific functionalities. Graphene possesses perfect 2D atomic architecture and has a large surface area that enhances the bonding, with tailored functional groups on its surface with polymer chains to form high strength composites. Recently, a lot of research has focused on developing composites with high specific strength, high electrical and thermal conductivities, high impact resistance, excellent energy storage capability and ability to maintain their strength at low-temperature environments by using graphene, graphene oxide (GO), reduced graphene oxide (rGO) or carbon nanotube/graphene. Ultimate goals are to design composites that can meet specific requirements for different engineering applications. In this paper, the discussion on all aspects in relation to the use of graphene and its associated compounds for advanced composites will be given in detail. The potentiality of using these materials for hightech applications will be explored. Up to date, it has been proved that the use of graphene-based nanofillers does improve the mechanical, interfacial bonding, electrical, thermal and electromagnetic interference shield properties of polymer-based materials. Appropriately adding a small amount of these nanofillers do make a big difference to the properties of host materials.

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Morphology and structure control of amine- functionalized graphene/polyaniline composite for high-performance supercapacitors

Cited by 36 publications

References 50 publications

Ag@AgCl Photocatalyst Loaded on the 3D Graphene/PANI Hydrogel for the Enhanced Adsorption‐Photocatalytic Degradation and In Situ SERS Monitoring Properties

Ag@AgCl Photocatalyst Loaded on the 3D Graphene/PANI Hydrogel for the Enhanced Adsorption‐Photocatalytic Degradation and In Situ SERS Monitoring Properties

Recent Development of Polyaniline/graphene Composite Electrodes for Flexible Supercapacitor Devices

Tailoring specific properties of polymer-based composites by using graphene and its associated compounds

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