Graphene oxide nanocomposites for potential wearable solar cells—A review

Simões, Raul; Neto, Victor

doi:10.1557/jmr.2016.203

Cited by 7 publications

(2 citation statements)

References 149 publications

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“…Both peaks arise from the vibrations of sp 2 carbon atoms. The D peak appears because of the series of structural defects caused by changes in the rings of sp 2 carbon atoms, whereas the G peak arises from the stretching vibration of sp 2 carbon atoms [37,38]. In the spectrum of pure graphite, the D and G peaks are reported at ∼1354 and ∼1581 cm −1 , respectively.…”

Section: Structural Characterizationmentioning

confidence: 99%

3D nitrogen-doped graphene created by the secondary intercalation of ethanol with enhanced specific capacity

Gao

et al. 2021

Nanotechnology

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Here, we report an improved synthesis strategy for 3D nitrogen-doped graphene to increase the specific capacity of supercapacitors. Ethanol replaces the strong oxidant hydrogen peroxide in the improved Hummers method, and the loose porous structure is conducive to charge transfer. N-doped porous 3D graphene was synthesized from RGO-C prepared by ethanol secondary intercalation modification of functional groups. Ammonia was selected as the dopant; the microstructure and electrochemical performance of samples synthesized at different temperatures were examined. The results demonstrate that the 3D nitrogen-doped graphene (N-RGO-5) had a layered tuple shape with a sheet thickness of 0.612 nm.The specific surface area of the 3D N-RGO-5, which was prepared at 190°C, was 258.371 m2 g−1, which was higher than that (5.877 m2 g−1) of the original graphite. The 3D N-RGO-5 exhibited a specific capacitance of 236 F g−1 and an energy density of 32.78 Wh kg−1 at a current density of 1 A g−1, which is 27% higher than the specific capacitance of RGO. The 3D N-RGO-5 demonstrated an excellent capacity retention rate of 93.6% after 5000 cycles at a current density of 1 A g−1. This study demonstrates that the unique 3D structure and N-doping of N-RGO considerably improved the overall energy storage performance of graphene-based nanomaterials.

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Section: Structural Characterizationmentioning

confidence: 99%

3D nitrogen-doped graphene created by the secondary intercalation of ethanol with enhanced specific capacity

Gao

et al. 2021

Nanotechnology

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“…Tremendous efforts have been made to develop the photovoltaic self-powered fibers/fabrics. [356,357] It provides additional energy source for wearables, especially for the soft robots which would operate individually or perform task remotely. Here we summarize the fibers/fabrics solar cells with representative fabrication methods, combinations, and adaptabilities to various extreme conditions.…”

Section: Photovoltaic Self-powered Fibers/fabricsmentioning

confidence: 99%

Functional Fibers and Fabrics for Soft Robotics, Wearables, and Human–Robot Interface

2020

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Fiber that has been known for thousands of years for textile engineering, is a kind of thin 1D material with large length-diameter ratio and softness. Fiber can be further processed into 1D or 3D yarns and 2D or 3D fabrics and can be subjected to wellestablished textile manufacturing techniques, such as dyeing, twisting, sewing, knitting, weaving, braiding, etc. [1] As commercially available material, fabric has been widely used for clothing, bedding, or furniture. Such wide-adoption demonstrates fabrics/textiles to be important and adaptable as daily useable material due to their merits of protection, breathability, comfort, and durability. [2] In recent years, novel smart responsive functions are desirable to be implemented on fibers and fabrics for seamless integrations of actuators, sensors, power sources, etc., to realize the robotic fibers/fabric-based manipulators and human-robot interfaces. These emerging responsive fibers/ fabrics are desirable to offer programmable functions, actuations, perception and capable of building an intuitive and dynamic collaborative scenarios with human, promising in enabling applications such as remote operation, human motion assistance, human perception, health monitoring and biomedical detection and therapy. [3][4][5] It is an attractive concept that the future human-robot interfaces could be embodied in familiar forms for humans such as textiles or clothes. Compared with the polymeric and elastomeric soft robotics, [6][7][8][9] fibers and fabrics are advantageous in applications of soft robotics and wearables for human. The devices could be programmable to have accurate designs in configuration and high performance by traditional manufacturing processes of textile, applying twist to transform fibers into coils, yarns with hierarchical structures, which could be further fabricated into fabrics or textiles by sewing, weaving, knitting, etc., techniques (Figure 1), guaranteeing good wearability, skin affinity, washability, and durability, which are intriguing and necessary for friendly robotics interactions with human.Soft robotics include three main components of actuators, sensors, and control modules with power sources. [10,11] Of which, actuators, sensors and power sources all could be designed in the form of fibers or fabrics, rendering facile assembly, and integration by interlocking. [12] Common actuations can be Soft robotics inspired by the movement of living organisms, with excellent adaptability and accuracy for accomplishing tasks, are highly desirable for efficient operations and safe interactions with human. With the emerging wearable electronics, higher tactility and skin affinity are pursued for safe and user-friendly human-robot interactions. Fabrics interlocked by fibers perform traditional static functions such as warming, protection, and fashion. Recently, dynamic fibers and fabrics are favorable to deliver active stimulus responses such as sensing and actuating abilities for soft-robots and wearables. First, the responsive mechanisms of fiber/fabric actu...

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Flexible and Wearable Electronics

Bai

et al. 2020

Flexible and Wearable Electronics for Smart Clothing

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Graphene oxide nanocomposites for potential wearable solar cells—A review

Abstract: Abstract

Cited by 7 publications

References 149 publications

3D nitrogen-doped graphene created by the secondary intercalation of ethanol with enhanced specific capacity

3D nitrogen-doped graphene created by the secondary intercalation of ethanol with enhanced specific capacity

Functional Fibers and Fabrics for Soft Robotics, Wearables, and Human–Robot Interface

Flexible and Wearable Electronics

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