Preparation and characterization of polyaniline/p-phenylenediamine grafted graphene oxide composites for supercapacitors

Wang, Tingsheng; Sun, Hongjuan; Peng, Tongjiang; Liu, Bo; Hou, Yi; Lei, Bo

doi:10.1016/j.molstruc.2020.128835

Cited by 22 publications

(5 citation statements)

References 39 publications

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“…Moreover, both the SEM image and the EDX mapping of GF/PANI 4:1 in Figure 2 e–h exhibits a uniform distribution of PANI covered on the graphene sheets forming a continuous network. However, the entanglement of fibers gets intensified with an increasing width in GF/PANI 3:1 , indicating the overdose of AN will lead to serious agglomeration [ 24 , 25 ]. Additionally, according to the electrical conductivity (σ) of each filler in Figure S1 a, the GF/PANI 4:1 also exhibits the highest σ up to 32.58 S m −1 , suggesting the presence of fibrous conductive PANI has successfully connected the graphene sheets to provide effective pathways for electron transportation.…”

Section: Resultsmentioning

confidence: 99%

Preparation of p-Phenylenediamine Modified Graphene Foam/Polyaniline@Epoxy Composite with Superior Thermal and EMI Shielding Performance

Wang

Xiao

et al. 2021

Polymers

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With the development of integrated devices, the local hot spot has become a critical problem to guarantee the working efficiency and the stability. In this work, we proposed an innovative approach to deliver graphene foam/polyaniline@epoxy composites (GF/PANI@EP) with improvement in the thermal and mechanical property performance. The graphene foam was firstly modified by the grafting strategy of p-phenylenediamine to anchor reactive sites for further in-situ polymerization of PANI resulting in a conductive network. The thermal conductivity (κ) and electromagnetic interference shielding (EMI) performance of the optimized GF/PANI4:1@EP is significantly enhanced by 238% and 1184%, respectively, compared to that of pristine EP with superior reduced modulus and hardness. Such a method to deliver GF composites can not only solve the agglomeration problem in traditional high content filler casting process, but also provides an effective way to build up conductive network with low density for thermal management of electronic devices.

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Section: Resultsmentioning

confidence: 99%

Preparation of p-Phenylenediamine Modified Graphene Foam/Polyaniline@Epoxy Composite with Superior Thermal and EMI Shielding Performance

Wang

Xiao

et al. 2021

Polymers

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“…Since the intensity of the D ′ band is inversely proportional to the content of sp 3 -hybridized carbon, its appearance verifies the elimination of the predominant number of oxygen groups, although still indicating the introduction of vacancy defects, graphene edges, or folds [ 62 ]. The nature of the D 4 band is less unambiguous, being attributed to either the presence of polyene chains, sp 3 -hybridized carbon, or functionalization by various groups, such as amines [ 63 , 64 , 65 ]. Considering the absence of this band in the GO spectrum and introduction of thiols, the latter interpretation is regarded as the most relevant one, although further studies are needed on this question.…”

Section: Resultsmentioning

confidence: 99%

A Blueprint for the Synthesis and Characterization of Thiolated Graphene

et al. 2021

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Graphene derivatization to either engineer its physical and chemical properties or overcome the problem of the facile synthesis of nanographenes is a subject of significant attention in the nanomaterials research community. In this paper, we propose a facile and scalable method for the synthesis of thiolated graphene via a two-step liquid-phase treatment of graphene oxide (GO). Employing the core-level methods, the introduction of up to 5.1 at.% of thiols is indicated with the simultaneous rise of the C/O ratio to 16.8. The crumpling of the graphene layer upon thiolation without its perforation is pointed out by microscopic and Raman studies. The conductance of thiolated graphene is revealed to be driven by the Mott hopping mechanism with the sheet resistance values of 2.15 kΩ/sq and dependable on the environment. The preliminary results on the chemiresistive effect of these films upon exposure to ethanol vapors in the mix with dry and humid air are shown. Finally, the work function value and valence band structure of thiolated graphene are analyzed. Taken together, the developed method and findings of the morphology and physics of the thiolated graphene guide the further application of this derivative in energy storage, sensing devices, and smart materials.

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“…Another important piece of information extracted from cluster 1 is that the application of graphene has been promising in this field, with its strong correlation with the performance, stability, and degradation of PANI membranes. Studies show that graphene-based PANI membranes exhibit improved structure and electrochemical performance [53][54][55][56].…”

Section: Future Research Trends Of Pani Membranes In Water Treatmentmentioning

confidence: 99%

Research Trends in the Use of Polyaniline Membrane for Water Treatment Applications: A Scientometric Analysis

et al. 2022

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Polyaniline (PANI), which is a member of the family of electrically conducting polymers, has been widely discussed as a potential membrane for wastewater treatment. Although a steady growth in PANI literature was observed, analyzing PANI literature quantitatively is still a novelty. The main aim of this study is to unearth the current research status, global trends, and evolution of PANI membranes literature and their use in water treatment applications over time. For this purpose, a scientometric study was performed consisting of bibliometric and bibliographic analysis. A total of 613 entities were extracted from Web of Science published during the last 50 years and were analyzed to map trends based on leading peer-reviewed journals, publication records, leading research disciplines, countries, and organizations. The study shows that the number of annual publications increased exponentially from 2005 to 2020 and is expected to keep increasing in the current decade. The Journal of Membrane Science published the highest number of articles and was identified as the most-cited journal in the field. China, India, and the USA were observed as the top three research hubs. The top-ranked authors in the field were Wang, Jixiao, and Wang, Zhi. To find research trends, four different clusters of keywords were generated and analyzed. The top five most frequent keywords turn out to be polyaniline, water, performance, membranes, and nanoparticles. The analysis suggests that the application of nanotechnology for modifying PANI membranes (using nanoparticles, nanotubes, and graphene specifically) is the future of this field. This study elucidates the research streamline of the field that may serve as a quick reference for early career researchers and industries exploring this field.

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Preparation and characterization of polyaniline/p-phenylenediamine grafted graphene oxide composites for supercapacitors

Cited by 22 publications

References 39 publications

Preparation of p-Phenylenediamine Modified Graphene Foam/Polyaniline@Epoxy Composite with Superior Thermal and EMI Shielding Performance

Preparation of p-Phenylenediamine Modified Graphene Foam/Polyaniline@Epoxy Composite with Superior Thermal and EMI Shielding Performance

A Blueprint for the Synthesis and Characterization of Thiolated Graphene

Research Trends in the Use of Polyaniline Membrane for Water Treatment Applications: A Scientometric Analysis

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