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
Citations
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Light-Powered Directional Nanofluidic Ion Transport in Kirigami-Made Asymmetric Photonic-Ionic Devices.
Meijuan Jia,Xian Kong,Lili Wang,Yanbing Zhang,Di Quan,Liping Ding,Diannan Lu,Lei Jiang,Wei Guo +8 more
TL;DR: Asymmetric photonic-ionic devices based on kirigami-tailored graphene oxide paper are fabricated, and directional nanofluidic ion transport properties therein powered by full-area light illumination are demonstrated.
Journal ArticleDOI
An impedance spectroscopy study of the rotation and reorientation of water molecules in hydrated graphite oxide
TL;DR: In this article, two dielectric loss peaks were observed in hydrated graphite oxide and attributed to relaxational motions of water molecules at two types of sites, namely the two-dimensional space between GO layers as well as inter-grain voids.
Journal ArticleDOI
On-Chip Asymmetric Microsupercapacitors Combining Reduced Graphene Oxide and Manganese Oxide for High Energy-Power Tradeoff
Richa Agrawal,Chunlei Wang +1 more
TL;DR: The high energy-power trade-off of the device is attributed to the synergistic effects of utilizing double layer and pseudocapacitive charge storage mechanisms along with in-plane interdigital microelectrode design within one optimized micro-device.
Journal ArticleDOI
Holographic patterning of graphene-oxide films by light-driven reduction
Emanuele Orabona,Antonio Ambrosio,Angela Longo,Gianfranco Carotenuto,Luigi Nicolais,Pasqualino Maddalena +5 more
TL;DR: In this work, computer-generated holograms have been exploited to realize complex graphene patterns in a single shot, different from serial laser writing or mask-based photolithographic processes.
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Chemical Structure of Oxidized Multilayer Epitaxial Graphene: A Density Functional Theory Study
TL;DR: In this article, density functional theory calculations are carried out to model the structure and interpret recent X-ray photoelectron spectroscopy measurements of graphene oxide films obtained by Hummers oxidation of multilayer graphene grown epitaxially on silicon carbide.
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.