Revealing the interrelation between hydrogen bonds and interfaces in graphene/PVA composites towards highly electrical conductivity

Yang, Lijun; Weng, Wei; Fei, Xiang; Pan, Liang; Li, Xinao; Xu, Wenting; Hu, Zexu; Zhu, Meifang

doi:10.1016/j.cej.2019.123126

Cited by 37 publications

(17 citation statements)

References 37 publications

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“…The high electrical conductivity of OIHFs is necessary for use in electrochemical energy devices. [ 35 , 36 ] Improvement of the electrical conductivity of OIHFs can be realized by using conducting polymers or by varying the carbonization process of the polymer fibers listed above. The fabrication of polymer‐based carbon fibers mainly includes two processes: polymer fibers formation and subsequent carbonization.…”

Section: Brief Overview Of Oihfsmentioning

confidence: 99%

Organic/Inorganic Hybrid Fibers: Controllable Architectures for Electrochemical Energy Applications

et al. 2021

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Organic/inorganic hybrid fibers (OIHFs) are intriguing materials, possessing an intrinsic high specific surface area and flexibility coupled to unique anisotropic properties, diverse chemical compositions, and controllable hybrid architectures. During the last decade, advanced OIHFs with exceptional properties for electrochemical energy applications, including possessing interconnected networks, abundant active sites, and short ion diffusion length have emerged. Here, a comprehensive overview of the controllable architectures and electrochemical energy applications of OIHFs is presented. After a brief introduction, the controllable construction of OIHFs is described in detail through precise tailoring of the overall, interior, and interface structures. Additionally, several important electrochemical energy applications including rechargeable batteries (lithium-ion batteries, sodium-ion batteries, and lithium-sulfur batteries), supercapacitors (sandwich-shaped supercapacitors and fiber-shaped supercapacitors), and electrocatalysts (oxygen reduction reaction, oxygen evolution reaction, and hydrogen evolution reaction) are presented. The current state of the field and challenges are discussed, and a vision of the future directions to exploit OIHFs for electrochemical energy devices is provided.

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Section: Brief Overview Of Oihfsmentioning

confidence: 99%

Organic/Inorganic Hybrid Fibers: Controllable Architectures for Electrochemical Energy Applications

et al. 2021

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“…In the field of ECPCs, Zhu et al fabricated conductive PVA/GN nanocomposites based on solution blending (T3), film casting (S8) and hot drawing (S4) successively. Due to the hot drawing treatment on PVA/graphene composites, aligned graphene conductive network was observed and a superior conductivity value of 25 S m −1 at 6.25 wt% reduced graphene oxide with slightly oxygen content (SRGO) loading was achieved [ 168 ]. Moreover, the processing method containing solution blending (T3), electrospinning (S11) and compression (S15) could form oriented graphite nanoplatelets (GNPs) network (Fig.…”

Section: Selection and Combination Of Preparation Toolsmentioning

confidence: 99%

“Toolbox” for the Processing of Functional Polymer Composites

et al. 2021

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The processing methods of functional polymer composites (FPCs) are systematically summarized in “Toolbox”. The relationship of processing method-structure-property is discussed and the selection and combination of tools in processing among different FPCs are analyzed. A promising prospect is provided regarding the design principle for high performance FPCs for further investigation. Functional polymer composites (FPCs) have attracted increasing attention in recent decades due to their great potential in delivering a wide range of functionalities. These functionalities are largely determined by functional fillers and their network morphology in polymer matrix. In recent years, a large number of studies on morphology control and interfacial modification have been reported, where numerous preparation methods and exciting performance of FPCs have been reported. Despite the fact that these FPCs have many similarities because they are all consisting of functional inorganic fillers and polymer matrices, review on the overall progress of FPCs is still missing, and especially the overall processing strategy for these composites is urgently needed. Herein, a “Toolbox” for the processing of FPCs is proposed to summarize and analyze the overall processing strategies and corresponding morphology evolution for FPCs. From this perspective, the morphological control methods already utilized for various FPCs are systematically reviewed, so that guidelines or even predictions on the processing strategies of various FPCs as well as multi-functional polymer composites could be given. This review should be able to provide interesting insights for the field of FPCs and boost future intelligent design of various FPCs. Supplementary Information The online version contains supplementary material available at 10.1007/s40820-021-00774-5.

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“…7 However, it is also worth to be mentioned that a few coworkers have reported higher values of conductivity up to 25 S/m with various fillers like rGO-PVA nanocomposites 27,49 and SRGO/HRGO-PVA nanocomposites. 50 However, all these samples were casted using solution casting method. Our modified tape casting methodology is appropriate to produce repeatable films on large scale.…”

Section: Dielectric Studiesmentioning

confidence: 99%

Enhanced electrical conductivity and structural, mechanical characterization of standalone poly(vinyl alcohol)‐graphite nanoplatelets composite films

Janeesh

Meera

Shalom

et al. 2020

J of Applied Polymer Sci

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Polymer based nanocomposites are gaining attention in various fields of science and technology due to its tunable properties. In this work, we report for the first time, the preparation and study on electrical and mechanical properties of standalone poly(vinyl alcohol) (PVA) based graphite nanoplatelet (GnP) composite films using modified film casting technique. Our modified tape casting method can produce films with uniform thickness, and uniform dispersion of filler deprived of pinholes. This technique is scalable for the mass production of polymer composite films for device application. We have obtained a significant enhancement in the electrical conductivity of 9 orders of magnitude and a maximum value of 0.143 S/m using PVA-GnP composites. To the best of our knowledge, this increase is the highest among the reported values for PVA-GnP composite films. However, a reduction in crystallinity and tensile strength can be seen with the addition of GnP fillers. The maximum tensile strength obtained for PVA-GnP composite films was 15 MPa and is adequate for use in electronic applications and devices. The effect of filler addition in PVA is discussed in detail.

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Revealing the interrelation between hydrogen bonds and interfaces in graphene/PVA composites towards highly electrical conductivity

Cited by 37 publications

References 37 publications

Organic/Inorganic Hybrid Fibers: Controllable Architectures for Electrochemical Energy Applications

Organic/Inorganic Hybrid Fibers: Controllable Architectures for Electrochemical Energy Applications

“Toolbox” for the Processing of Functional Polymer Composites

Enhanced electrical conductivity and structural, mechanical characterization of standalone poly(vinyl alcohol)‐graphite nanoplatelets composite films

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