Facile fabrication of rGO/CNT hybrid fibers for high-performance flexible supercapacitors

Jiang, Naimeng; Huang, Furong; Xia, Weiwei; Wei, Jianwu; Zhou, Liya; Huo, Zhibao; Pang, Qi

doi:10.1007/s10854-017-7029-9

Cited by 8 publications

(4 citation statements)

References 44 publications

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“…The as-obtained wire-shaped supercapacitor displayed a high specific capacitance of 31.50 F/g, much higher than that for pure CNT fibers (5.83 F/g) under the same conditions, as presented in Figure 8b,c. Using a low-temperature chemical reduction assembly method with vitamin C as the reducing agent, Jiang et al [94] prepared flexible Furthermore, surface modification is also deemed as an effective approach for interface engineering, which leads to stronger interfacial interactions and higher mechanical properties of graphene-based composites. Inspired by the design principles originating from nacre, Zhang et al [69,118] performed chemical functionalization on graphene fibers by constructing synergistic interfacial interactions of covalent bonding, ionic bonding, and π−π interactions (Figure 7b).…”

Section: Carbon Allotropy/graphenementioning

confidence: 99%

“…The as-obtained wire-shaped supercapacitor displayed a high specific capacitance of 31.50 F/g, much higher than that for pure CNT fibers (5.83 F/g) under the same conditions, as presented in Figure 8b,c. Using a low-temperature chemical reduction assembly method with vitamin C as the reducing agent, Jiang et al [94] prepared flexible rGO/CNT hybrid fibers with an interconnected network architecture that showed excellent mechanical strength and volumetric high energy density. The volumetric specific capacitance of the rGO/CNT electrode estimated to be 559.9 F/cm 3 , and the qualitative specific capacitance was 59.76 F/g at a high current density of 1 A/g, which is higher than that of single rGO fibers.…”

Section: Carbon Allotropy/graphenementioning

confidence: 99%

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Recent Progress in Flexible Graphene-Based Composite Fiber Electrodes for Supercapacitors

2021

Crystals

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Graphene has shown the world its fascinating properties, including high specific surface area, high conductivity, and extraordinary mechanical properties, which enable graphene to be a competent candidate for electrode materials. However, some challenges remain in the real applications of graphene-based electrodes, such as continuous preparation of graphene fibers with highly ordered graphene sheets as well as strong interlayer interactions. The combination of graphene with other materials or functional guests hence appears as a more promising pathway via post-treatment and in situ hybridism to produce composite fibers. This article firstly provides a full account of the classification of graphene-based composite fiber electrodes, including carbon allotropy, conductive polymer, metal oxide and other two-dimensional (2D) materials. The preparation methods of graphene-based composite fibers are then discussed in detail. The context further demonstrates the performance optimization of graphene-based composite fiber electrodes, involving microstructure design and surface modification, followed by the elaboration of the application of graphene-based composite fiber electrodes in supercapacitors. Finally, we present the remaining challenges that exist to date in order to provide meaningful guidelines in the development process and prospects of graphene-based composite fiber electrodes.

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Section: Carbon Allotropy/graphenementioning

confidence: 99%

“…The as-obtained wire-shaped supercapacitor displayed a high specific capacitance of 31.50 F/g, much higher than that for pure CNT fibers (5.83 F/g) under the same conditions, as presented in Figure 8b,c. Using a low-temperature chemical reduction assembly method with vitamin C as the reducing agent, Jiang et al [94] prepared flexible rGO/CNT hybrid fibers with an interconnected network architecture that showed excellent mechanical strength and volumetric high energy density. The volumetric specific capacitance of the rGO/CNT electrode estimated to be 559.9 F/cm 3 , and the qualitative specific capacitance was 59.76 F/g at a high current density of 1 A/g, which is higher than that of single rGO fibers.…”

Section: Carbon Allotropy/graphenementioning

confidence: 99%

Recent Progress in Flexible Graphene-Based Composite Fiber Electrodes for Supercapacitors

2021

Crystals

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“…1338 F•g -1 。然而, NiO 被功率性低、循环稳定性不理想、导电性差和比表面积低等缺点限制了其在超级电容器中的使用。为解决这些问题, 将 NiO 与其他高导电材料(如石墨烯、多孔碳)进行复合成为了研究的热点 [7][8] 。三维多孔石墨烯具有比二维石墨烯更大的比表面积和更高的电导率 [9] 。此外, 电解液离子和电子在三维多孔石墨烯中能实现快速扩散和传递 [10] 。然而, 其电极能量密度低, 无法满足使用需求。因此, 尝试将 NiO 纳米颗粒与三维石墨烯进行复合来制备超级电容器电极材料 [11] 。如 Zhou 等 [12] 通过化学气相沉积制备的三维石墨烯/NiO 的复合电极材料比电容在 0.67 A•g -1 电流密度下达到 119. 2 Fig.…”

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One-step Preparation and Electrochemical Performance of 3D Reduced Graphene Oxide/NiO as Supercapacitor Electrodes Materials

Zeng¹,

Xin²,

Bulin³

et al. 2018

Journal of Inorganic Materials

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In this study, by using dispersions of graphene oxide (GO) and nickel nitrate (Ni(NO 3) 2 •6H 2 O) with different ratios as precursors, three-dimensional self-supported reduced graphene oxide/NiO composites (3D rGO/NiO) were prepared via a one-step hydrothermal method. The analysis results (XRD, SEM, etc) indicate that NiO nanoparticles are homogeneously dispersed on the surface of graphene layers. The specific capacitance of 3D rGO/NiO composite reaches 1208.8 F•g-1 at a current density of 1 A•g-1 when the mass ratio of GO and Ni(NO 3) 2 •6H 2 O is 1 : 4. With the current density increasing from 0.2 to 10 A•g-1 , the specific capacitance retention of this composite is higher than 72.6%. After 10000 cycles, the specific capacitance of 3D rGO/NiO at a current density of 10 A•g-1 remained at 93% of the initial specific capacitance. All of these demonstrated that the composite possesses good rate capability and cycle stability. The 3D rGO/NiO composite has excellent electrochemical performances when compared with pure NiO or rGO, which is attributed to the synergistic effect between NiO and rGO.

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“…Recently, some attempts have been made to fabricate multiple material layers of the EDLC in one rapid and accurate deposition process [3]. Several fabrication processes have been used to fabricate flexible EDLCs and micro supercapacitors and reported in the literature including photolithography and an electrochemical deposition, a micro extrusion, coating, roll-to-roll printing, etc [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Compared to the method described here, other 3D printing methods are usually costly or not able to process all the materials necessary for making EDLCs, such as 3D selective laser melting machine [21].…”

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confidence: 99%

A study of 3D printed flexible supercapacitors onto silicone rubber substrates

Areir

Harrison

et al. 2017

J Mater Sci: Mater Electron

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carbon-based materials have long been used as electrodes for EDLCs. Activated carbon (AC) is one of the most important commercial carbon materials being used as electrodes of EDLCs [2]. It is useful because of its high specific surface area, low-cost, an excellent synergy effect with additive materials and is easy to process. Recently, some attempts have been made to fabricate multiple material layers of the EDLC in one rapid and accurate deposition process [3]. Several fabrication processes have been used to fabricate flexible EDLCs and micro supercapacitors and reported in the literature including photolithography and an electrochemical deposition, a micro extrusion, coating, roll-to-roll printing, etc [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Compared to the method described here, other 3D printing methods are usually costly or not able to process all the materials necessary for making EDLCs, such as 3D selective laser melting machine [21]. 3D printing based on paste extrusion has been adopted for this study because it allows EDLCs to be fabricated in one single process including package sealing with various types of materials. In addition, EDLCs have been studied and manufactured by 3D direct-ink writing process, but the viscosity of the AC and silicone materials makes them unsuitable for this approach [22]. An important requirement of an EDLC nowadays is its ability to be highly flexible to meet the requirement for numerous applications. It is clear that some of these processes add little to the capacitance behaviour. Some need pre-treatment, e.g. the spray coating technique has a number of drawbacks like unevenness and a wide spread due to a high treatment temperature. The cost of fabrication is high and time-consuming when using the photolithography process. Limited electrode thicknesses and substrate are provided with the DVD burner process. Hence, these processes may not suit flexible EDLCs with a variety of material substrates, AC electrodes and gel electrolyte patterns and thicknesses. However, one of the major challenges of component Abstract The rapid development of flexible energy storage devices is crucial for various electronics industries. Highly flexible electrochemical double layer capacitors (EDLCs) can be manufactured by 3D printing technology. It was a great challenge to fabricate multiple material layers of the EDLC in one rapid and accurate deposition event. The fabricated structures were composed of twelve electrodes which could be configured in a number of different ways in one block module. This work aims to investigate the performance of the flexible EDLCs manufactured by 3D printing in a honeycomb pattern. The EDLC cells were fabricated using a slurry made from commercial activated carbon (AC) and a gel electrolyte deposited on a transparent silicone substrate. The flexible EDLCs structures can be used in flexible electronics with different patterns and sizes using 3D printer and can be applied to many applications such as wearable technology.

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Facile fabrication of rGO/CNT hybrid fibers for high-performance flexible supercapacitors

Cited by 8 publications

References 44 publications

Recent Progress in Flexible Graphene-Based Composite Fiber Electrodes for Supercapacitors

Recent Progress in Flexible Graphene-Based Composite Fiber Electrodes for Supercapacitors

One-step Preparation and Electrochemical Performance of 3D Reduced Graphene Oxide/NiO as Supercapacitor Electrodes Materials

A study of 3D printed flexible supercapacitors onto silicone rubber substrates

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