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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Layered coating of ultraflexible graphene-based electrodes for high-performance in-plane quasi-solid-state micro-supercapacitors.
Jingwei Du,Xuemei Mu,Yirong Zhao,Yaxiong Zhang,Shengming Zhang,Baoyu Huang,Yingzhuo Sheng,Yizhu Xie,Zhenxing Zhang,Erqing Xie +9 more
TL;DR: A new strategy for the fabrication of ultraflexible MnO2@reduced graphene oxide (rGO) films (MGFs) for high-performance planar QSS MSCs through a facile layer-by-layer coating and a laser engraving method to enhance electrochemical performance is demonstrated.
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A Three‐Layer All‐In‐One Flexible Graphene Film Used as an Integrated Supercapacitor
TL;DR: In this article, a high volumetric energy density membrane-like flexible supercapacitor with an rGO-TiO2/GO/rGO- TiO2 sandwich structure is presented.
Journal ArticleDOI
Flexible quasi-solid-state 2.4 V aqueous asymmetric microsupercapacitors with ultrahigh energy density
Qichong Zhang,Qichong Zhang,Qichong Zhang,Jun Zhang,Jun Zhang,Zhenyu Zhou,Lei Wei,Yagang Yao,Yagang Yao +8 more
TL;DR: In this article, a simple and cost-effective cut-and-transfer method was proposed to fabricate flexible quasi-solid-state 2.4 V aqueous asymmetric microsupercapacitors (AMSCs) by employing hierarchical Na-MnOx nanosheets on 3D nitrogen-doped carbon fibers as the positive electrode and VN nanosheet arrays as the negative electrode.
Journal ArticleDOI
Versatile Strategy to Design Flexible Planar-Integrated Microsupercapacitors Based on Co3O4-Decorated Laser-Induced Graphene
TL;DR: Flexible planar microsupercapacitors (MSCs) have become one of the most crucial energy storage devices for wearable and portable electronics on account of the superiorities of miniature size and energy efficiency as discussed by the authors.
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Localized deoxygenation and direct patterning of graphene oxide films by focused ion beams.
TL;DR: This novel FIB-induced conversion technique is harnessed for the direct imprinting of complex micrometer-scale shapes and sub-20-nm lines of rGO in insulating films and flakes of GO establishing the capability of generating features varying in size from approximately tens of nanometers to approximately hundreds of micrometers in a maskless, efficient manner.
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.