Journal ArticleDOI
Direct laser writing of micro-supercapacitors on hydrated graphite oxide films
Wei Gao,Neelam Singh,Li Song,Zheng Liu,Arava Leela Mohana Reddy,Lijie Ci,Robert Vajtai,Qing Zhang,Bingqing Wei,Pulickel M. Ajayan +9 more
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TLDR
This work demonstrates the scalable fabrication of a new type of all-carbon, monolithic supercapacitor by laser reduction and patterning of graphite oxide films, which show good cyclic stability, and energy storage capacities comparable to existing thin-filmsupercapacitors.Abstract:
All-carbon microscale supercapacitors can be simply and scalably fabricated by the laser patterning and reduction of graphene oxide.read more
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Printable Fabrication of Nanocoral-Structured Electrodes for High-Performance Flexible and Planar Supercapacitor with Artistic Design
TL;DR: The high scalability of such a printable method is demonstrated by fabrication of large-sized artistic supercapacitors serving as energy-storage devices in a wearable self-powered system as a proof of concept.
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Laser direct writing of high-performance flexible all-solid-state carbon micro-supercapacitors for an on-chip self-powered photodetection system
TL;DR: A facile fabrication of high-performance flexible all-solid-state carbon micro-supercapacitors with highly improved energy and power densities is demonstrated by laser direct writing on polyimide films using a 405nm blue-violet semiconductor laser in an Ar atmosphere.
Journal ArticleDOI
Graphene‐Based Linear Tandem Micro‐Supercapacitors with Metal‐Free Current Collectors and High‐Voltage Output
Xiaoyu Shi,Xiaoyu Shi,Zhong-Shuai Wu,Jieqiong Qin,Jieqiong Qin,Shuanghao Zheng,Shuanghao Zheng,Sen Wang,Sen Wang,Feng Zhou,Chenglin Sun,Xinhe Bao +11 more
TL;DR: The printable fabrication of new-type planar graphene-based linear tandem micro-supercapacitors on diverse substrates with symmetric and asymmetric configuration, high-voltage output, tailored capacitance, and outstanding flexibility is demonstrated.
Journal ArticleDOI
Carbon-based flexible micro-supercapacitor fabrication via mask-free ambient micro-plasma-jet etching
TL;DR: In this article, a mask-free micro-plasma-jet etching was used to etch carbon nanotubes (MWNTs) for all-solid-state flexible micro-supercapacitors.
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Two-step reduction of self-assembed three-dimensional (3D) reduced graphene oxide (RGO)/zinc oxide (ZnO) nanocomposites for electromagnetic absorption
TL;DR: In this article, a 3D-RGO/ZnO nanocomposite with a wide and effective absorption bandwidth (deeper than −10 dB) was developed, which was characterized as 6.4 GHz when the filler loading is 10 wt% in the composite and the thickness of the absorber is 2.5 mm.
References
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Journal ArticleDOI
Graphene-Based Ultracapacitors
TL;DR: CMG materials are made from 1-atom thick sheets of carbon, functionalized as needed, and here their performance in an ultracapacitor cell is demonstrated, illustrating the exciting potential for high performance, electrical energy storage devices based on this new class of carbon material.
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Large-area ultrathin films of reduced graphene oxide as a transparent and flexible electronic material
TL;DR: A solution-based method is reported that allows uniform and controllable deposition of reduced graphene oxide thin films with thicknesses ranging from a single monolayer to several layers over large areas, which could represent a route for translating the interesting fundamental properties of graphene into technologically viable devices.
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State of Understanding of Nafion
TL;DR: Light scattering experiments revealed that the radius of gyration had a linear dependence on the molar mass of the aggregates, which suggests that the particles are in the form of rods or ribbons, or at least some elongated structure.
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The Grotthuss mechanism
TL;DR: In this paper, it is suggested that the molecular mechanism behind prototropic mobility involves a periodic series of isomerizations between H 9 O 4 + and H 5 O 2 +, the first trigerred by hyrdogen-bond cleavage of a second-shell water molecule and the second by the reverse, hydrogen-bonder formation process.