Highly flexible and shape-persistent graphene microtube and its application in supercapacitor

Yang, Junjie; Weng, Wei; Zhang, Yang; Du, Xiaowen; Liang, Yongcheng; Yang, Lijun; Luo, Xiaogang; Cheng, Yanhua; Zhu, Meifang

doi:10.1016/j.carbon.2017.10.045

Cited by 29 publications

(11 citation statements)

References 38 publications

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“…To make fibers into fiber‐based electronic devices, the first and the most important aspect is the preparation of conductive fibers with considerable mechanical properties. A fiber can be made from any type of materials, including metals, alloys, ceramics, polymers, and their composites by different methods, e.g., melt‐spinning, wet‐spinning, electrospinning, scrolling, drawing, templated deposition, etc. Sometimes, surface treatment methods are accompanied .…”

Section: Fiber Designmentioning

confidence: 99%

“…Metal‐based composite fibers are usually obtained by growing or coating other materials mainly including carbonaceous materials and metallic compounds on metal fibers. For instance, Cu@graphene composite fibers can be acquired by growing graphene on Cu wires via electrochemical deposition, hydrothermal and CVD methods . Typically, for the hydrothermal method, copper wire and GO solution were mixed in a Teflon lined stainless steel autoclave and heated at 180 °C for 12 h. After the hydrothermal reaction, the temperature was decreased to the room temperature.…”

Section: Fiber Designmentioning

confidence: 99%

Section: Fiber Designmentioning

confidence: 99%

“…If there is a hole through one end to the other end in fibers, then hollow fibers are formed. A graphene hollow fiber is shown in Figure b . A copper wire template was used, on which GO sheets were coated by electrochemical deposition.…”

Section: Fiber Designmentioning

confidence: 99%

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A Route Toward Smart System Integration: From Fiber Design to Device Construction

et al. 2019

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Fiber is a symbol of human civilization, being ubiquitous but obscure in society over most of history. Fiber has been revived upon the advent of fiber‐based electronic devices in the past two decades. This is due to its desirable lightweight, flexible, and conformable characteristics, which enable it to play a fundamental role in the electronic and information era. Numerous fiber‐based electronic devices have sprung up in energy conversion, energy storage, sensing, actuation, etc. A possibility is thereby conceived that they can be integrated into smart systems compatible with the human body, consisting of biotic fiber‐based organs and tissues, which possess similar but more advanced functions. However, the design of mono‐/multifibers, the construction of fiber‐based devices, and the integration of these smart systems represent great challenges in fundamental understanding and practical implementation. A systematic review of the current state of the art with respect to the design and fabrication of electronic fiber materials, construction of fiber‐based devices, and integration of smart systems is presented. In addition, limitations of current fiber‐based devices and perspectives are explored toward potential and promising smart integration.

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Section: Fiber Designmentioning

confidence: 99%

Section: Fiber Designmentioning

confidence: 99%

Section: Fiber Designmentioning

confidence: 99%

Section: Fiber Designmentioning

confidence: 99%

See 2 more Smart Citations

A Route Toward Smart System Integration: From Fiber Design to Device Construction

et al. 2019

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“…Supercapacitors based upon electrical double-layer capacitance have played a vital role in energy storage devices owing to their distinct merits, including rapid charge/discharge rate, superior power density, and extremely long cycle stability [3]. Various carbonaceous materials are employed in electrical double layer capacitors such as activated carbon, carbon nanotubes, and graphene because of their robust porosity, high electrical conductivity, and stable physicochemical properties [4,5]. However, conventional carbon-based electrical double layer capacitors suffer from a low specific capacitance and poor rate capability because of diffusion restriction between internal pores and electrolyte ions at high rate conditions [6].…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of 3D Hierarchically Porous Carbon Foam as Supercapacitor Electrode Material

Gao

Cai

et al. 2018

Applied Sciences

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A hierarchically porous 3D starch-derived carbon foam (SCF) with a high specific surface area (up to 1693 m 2 ·g −1 ) was first prepared by a facile solvothermal treatment, in which Na 2 CO 3 is used as both the template and activating agent. The hierarchically porous structure and high specific area endow the SCF with favorable electrochemical properties such as a high specific capacitance of 179.6 F·g −1 at 0.5 A·g −1 and a great rate capability and cycling stability, which suggest that the material can be a promising candidate for energy storage applications.

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Flexible/Stretchable Supercapacitors with Novel Functionality for Wearable Electronics

et al. 2020

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offering comfort to the user. Wearable electronics can be integrated into common textiles or be directly attached onto human skin to perform various functions, for instance, measuring pulses, sensing toxins in the environment, analyzing bodily fluids such as sweat, injecting medication, and informing the user of such activities. Aside from their biomedical purposes, wearable electronics with touchpads and displays, and smart functions, including Internet communication and facial and sound recognition, can also be developed to benefit and assist with daily activities. In addition to functionality, flexibility and stretchability are desired attributes of the components of wearable electronics so that the electronics can exhibit mechanical stability against deformation due to human motions without a deterioration in performance. Many flexible/stretchable devices were developed for integration into wearable devices such as various sensors including bio-signal [1-3] and environmental sensors, [4,5] solar cells, [6,7] energy harvesters, [8] antennas, [9,10] and radio frequency identification (RFID) tags. [11] Moreover, together with other flexible/ stretchable devices, energy storage devices used for powering the active devices on wearable electronics should also be able to withstand deformation. The energy storage devices built for wearable electronics should meet specific criteria, such as having a small size and high efficiency, and being flexible, lightweight, and biocompatible. [12,13] Among the various energy storage devices, supercapacitors are considered one of the most promising candidates in wearable electronics. Rechargeable metal-ion batteries such as lithium-ion batteries (LIBs) have been widely used as energy storage devices in commercial applications owing to their large energy density. Compared to the batteries, supercapacitors have simpler structures, faster charge-discharge time, higher power density of ≈10 kW kg −1 , and longer cycle life over 100 000 cycles. Owing to supercapacitors' uncomplicated architecture, their miniaturization has been extensively studied, resulting in micro-supercapacitors (MSCs). An MSC is a supercapacitor whose total device area is on the square millimeter or centimeter scale, and/or a supercapacitor with a thickness of <10 µm. [14] Materials with a high surface area such as foamstructured materials or nanocarbon-based materials can be utilized to reduce the size and weight of a supercapacitor and to With the miniaturization of personal wearable electronics, considerable effort has been expended to develop high-performance flexible/stretchable energy storage devices for powering integrated active devices. Supercapacitors can fulfill this role owing to their simple structures, high power density, and cyclic stability. Moreover, a high electrochemical performance can be achieved with flexible/stretchable supercapacitors, whose applications can be expanded through the introduction of additional novel functionalities. Here, recent advances in and future prospects for flexible/s...

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Highly flexible and shape-persistent graphene microtube and its application in supercapacitor

Cited by 29 publications

References 38 publications

A Route Toward Smart System Integration: From Fiber Design to Device Construction

A Route Toward Smart System Integration: From Fiber Design to Device Construction

Facile Fabrication of 3D Hierarchically Porous Carbon Foam as Supercapacitor Electrode Material

Flexible/Stretchable Supercapacitors with Novel Functionality for Wearable Electronics

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