Direct spinning of high-performance graphene fiber supercapacitor with a three-ply core-sheath structure

Yang, Zhengpeng; Zhao, Wei; Niu, Yutao; Zhang, Yongyi; Wang, Libo; Zhang, Wujun; Xi, Xiang; Li, Qingwen

doi:10.1016/j.carbon.2018.02.041

Cited by 82 publications

(47 citation statements)

References 41 publications

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“…The gel electrolyte was quickly solidified to stabilize the inner and outer electrodes and meanwhile functioned as a separator. The diameter, thickness, and uniformity of electrode or electrolyte layers can be precisely adjusted by changing the electrolyte concentration and the extrusion speed . Furthermore, this multichannel spinning method can be upgraded to construct more complex fiber‐shaped electronic devices such as the capacitive soft strain sensor.…”

Section: Large‐scale Productionmentioning

confidence: 99%

Application Challenges in Fiber and Textile Electronics

et al. 2019

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.201901971. (2 of 25)www.advmat.de www.advancedsciencenews.com energy and then deliver it to power other electronic devices whenever we want. The existing fiber-shaped energy storage devices include the supercapacitor, [15] the lithium (Li)-ion battery, [16] the lithium-sulfur battery, [17] the lithium-air battery, [18] the zinc-air battery, [19] the aluminum-air battery, [20] the sodiumion battery, [21] the zinc-ion battery, [22] and the silver-zinc battery. [23] Among them, the supercapacitor has been reported mostly due to the easy fabrication, and lithium-ion battery has laid the foundation for the development of other fiber-shaped batteries, which are thus discussed mainly in this review. 3) Light-emitting devices have been developed for various applications such as display, illumination, and photo therapy. According to the working mechanisms, there are electroluminescence, [24] mechanoluminescence, [25] photoluminescence, [26] thermoluminescence, [27] sonoluminescence, [28] and chemiluminescence. [29] Among these, fiber-shaped electroluminescent devices have been developed extensively due to their good controllability, driven by direct current (DC) [30] or alternating current (AC) [31] electrical method, which are expounded mainly later. 4) Fibershaped sensors have found great potentials in the field of wearable medical devices for fitness monitoring and medical diagnostics especially as aging populations grow. By virtue of the 1D structure, fiber-shaped sensors can be implanted into the body with little injure or they can detect multiple signals simultaneously after integration into a tiny unit. [32] Fiber-shaped sensors generally work via physical processes on the basis of conducting fiber [33] and optical fiber, [34] and chemical processes based on chemical ligand. [35] Thereinto, fiber optic sensors have already been used in petrochemical, electric power, medical, civil engineering, etc. The detailed discussions about the above three fiber-shaped sensors are presented in the later section.Despite the great progress made in fiber and textile electronics, we have to realize that most of the research results are far from practical applications due to several existing obstacles. The performances of fiber-shaped electronic devices are not good enough to attract investors. For instance, although fiber-shaped solar cells have achieved a record power conversion efficiency (PCE) of 10%, [36] this value falls far below the certified efficiency of 24.2% for planar solar cells. [37] Besides, fiber-shaped electronic devices often decay in performance further as their lengths increase. Apart from low performances, scalable fabrication is another hard nut to crack if fiber-shaped electronic devices are to be commercialized. For one thing, researchers usually can only realize fiber-shaped electronic devices with the lengths from several to hundreds of millimeters at present owing to the absence of appropr...

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Section: Large‐scale Productionmentioning

confidence: 99%

Application Challenges in Fiber and Textile Electronics

et al. 2019

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“…The progress in the design of the spinneret is highlighted by introducing microfluidic spinnerets for complex component spinning, as it has rendered GBFs with desirable structures in a simple process . We have designed a microfluidic spinneret where GO and poly(vinyl alcohol) (PVA)/alginate sodium component could be extruded spontaneously from one outlet, forming a GO/PVA‐alginate/GO layered structure in a coagulation bath for shape fixing.…”

Section: Advance In Preparation Of Gbfsmentioning

confidence: 99%

“…After a subsequent reduction process, the overall structure became a highly flexible fiber SC that maintained over 80% of its electrochemical capacitance after 1000 bending cycles. Li and co‐workers further developed another spinning process by judiciously designing a spinneret with three coaxial channels (Figure b), where GO and the reduction agent (Vitamin C, VC) were injected into the outer and inner channel, respectively. At the same time, sodium carboxymethyl cellulose (CMC) was injected into the middle channel to separate the inner and outer liquids, acting as the separator in the final device.…”

Section: Advance In Preparation Of Gbfsmentioning

confidence: 99%

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Graphene‐Based Fibers: Recent Advances in Preparation and Application

Zhang

2019

Advanced Materials

109

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investigated [17][18][19][20] for building graphene-based fibers (GBFs) over recent years. [21][22][23] These unique macroscopic 1D assemblies of microscopic 2D graphene building blocks are of lightweight, high specific surface area (SSA), and remarkable mechanical and electrical properties, thus qualifying them as ideal materials for fiber electronics. [14,[24][25][26] Currently, the well-developed wet-spinning method is widely adopted in preparing GBFs, [27,28] while newly designed spinning methods with microfluidic spinnerets and different kinds of coagulation bath have yielded GBFs with novel structures and functions. Apart from these methods, emerging techniques such as chemical vapor deposition (CVD) and twisting have been developed to meet different applications of GBFs in strain sensors, stretchable SC, and multifunctional actuators. [9,29,30] Together with the evolution in their preparation, mechanical and electrical properties of GBFs have been considerably enhanced since their debut. Bioinspired strengthening and toughening strategies for membranes have been found to work for GBFs as well, and atomic doping methods have efficiently increased electrical conductivity of GBFs to a record value of 2.2 × 10 7 S m −1 , [31] which is even comparable to that of certain metals such as nickel (1.5 × 10 7 S m −1 ) and aluminum (3.5 × 10 7 S m −1 ). Based on their novel structures and significantly enhanced mechanical/electrical properties, GBFs have found their substantial uses particularly in newly designed, high-performance electrochemical devices for energy conversion and storage.Several excellent reviews have witnessed the rapid development of GBFs. [17,20,23] For example, Chou and co-workers [18] previously gave a comprehensive review on the synthesis, device performance, and potential applications of GBFs. Another review presented by Gao and his colleagues [32] focused on the microscopic mechanism during liquid crystal formation and summarized its effects on producing continuous fibers. Additionally, applications of GBFs in flexible/ wearable SCs and bioinspired nanocomposites were specifically discussed by Huang et al. [25] and Cheng and co-workers, [33] respectively. In this featured article, we mainly focus on very recent research advances in GBFs over the past few years and introduce progresses in preparation techniques, strategies for performance enhancement and novel applications (Figure 1), aiming to provide a state-of-the-art update for GBFs as well as perspectives for their future development.Graphene-based fibers (GBFs) are macroscopic 1D assemblies formed by using microscopic 2D graphene sheets as building blocks. Their unique structure exhibits the same merits as graphene such as low weight, high specific surface area, excellent mechanical/electrical properties, and ease of functionalization. Furthermore, the fibrous nature of GBFs is intrinsically compatible with existing textile technologies, making them suitable for applications in flexible and wearable electronics. Recently, novel synthetic ...

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“…The solid‐state SCs based on these rGO/CNC composite fibers possessed a high volumetric capacitance of 208.2 F cm −3 with a good bending stability . By using a coaxial three‐channel spinneret, Yang et al directly wet‐spun a graphene‐based fiber supercapacitor, in which graphene‐based core layer and graphene‐based sheath layer were separated by a thin and continuous gel electrolyte interlayer …”

Section: Fiber‐shaped Supercapacitorsmentioning

confidence: 99%

Graphene‐Based Nanomaterials for Flexible and Wearable Supercapacitors

Huang

Santiago

Loyselle

et al. 2018

Small

123

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Along with the quick development of flexible and wearable electronic devices, there is an ever-growing demand for light-weight, flexible, and wearable power sources. Because of the high power density, excellent cycling stability and easy fabrication, flexible supercapacitors are widely studied for this purpose. Graphene-based nanomaterials are attractive electrode materials for flexible and wearable supercapacitors owing to their high surface area, good mechanical and electrical properties, and excellent electrochemical stability. The 2D structure and high aspect ratio of graphene nanosheets make them easy to assemble into films or fibers with good mechanical properties. In recent years, enormous progress has been made in developing flexible and wearable graphene-based supercapacitors. Here, the material and structure design strategies for developing film-shaped and emerging fiber-shaped flexible supercapacitors based on graphene nanomaterials are summarized.

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Direct spinning of high-performance graphene fiber supercapacitor with a three-ply core-sheath structure

Cited by 82 publications

References 41 publications

Application Challenges in Fiber and Textile Electronics

Application Challenges in Fiber and Textile Electronics

Graphene‐Based Fibers: Recent Advances in Preparation and Application

Graphene‐Based Nanomaterials for Flexible and Wearable Supercapacitors

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