Functional Gels Based on Chemically Modified Graphenes

Li, Chun; Shi, Gaoquan

doi:10.1002/adma.201306104

Cited by 288 publications

(213 citation statements)

References 206 publications

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“…Graphene and its derivatives along with self-assembled organic molecules are applied to the formation of hybrid materials with enhanced electrical and mechanical properties. Both GO and RGO have been successfully incorporated into a variety of supramolecular materials such as gels and assemblies of π-conjugated molecules and polymers 12,14,[24][25][26] .…”

Section: Graphene-based Hybrid Materialsmentioning

confidence: 99%

Hybrid materials of 1D and 2D carbon allotropes and synthetic π-systems

et al. 2018

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Self-assembled synthetic hybrid materials are an important class of artificial materials with potential applications in various fields ranging from optoelectronics to medicine. The noncovalent interactions involved in the self-assembly process offer a facile way to create hybrid materials with unique and interesting properties. In this context, selfassembled hybrid materials based on carbon nanotubes (CNTs), graphene, and graphene derivatives such as graphene oxide (GO) and reduced graphene oxide (RGO) are of particular significance. These composites are solution processable, generally exhibit enhanced electrical, mechanical, and chemical properties, and find applications in the fields of light harvesting, energy storage, optoelectronics, sensors, etc. Herein, we present a brief summary of recent developments in the area of self-assembled functional hybrid materials comprising one-dimensional (1D) or twodimensional (2D) carbon allotropes and synthetic π-systems such as aromatic molecules, gelators, and polymers.

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Section: Graphene-based Hybrid Materialsmentioning

confidence: 99%

Hybrid materials of 1D and 2D carbon allotropes and synthetic π-systems

et al. 2018

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“…[48] Duan and Shi et al overviewed recent achievements in the synthesis of 3D graphene macrostructures. [28,49,50] Gao et al systemically summarized the state-of-the-art progress in fabrication and application of CNT and graphene-based 3D aerogels/hydrogels. [51] Mattevi et al also reviewed recent progress in mesoscale design of multifunctional 3D graphene networks.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

Chen

Feng

Liang

et al. 2017

Advanced Energy Materials

162

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Therefore, it is necessary to develop highperformance energy storage devices for facilitating the effective utilization of intermittent renewable energy sources. [7][8][9] Among varieties of electrochemical energy storage devices, supercapacitors (known as electrochemical capacitors) [10,11] and some rechargeable batteries (lithium-ion batteries (LIBs), lithiumsulfur (Li-S) batteries, and metal-O 2 batteries) [12][13][14][15] are at the frontier, because they can transport high power and store high energy. Nowadays, they play an indispensable role in our daily life by powering numerous portable electronic devices (e.g., cell phones and laptops), hybrid electric vehicles, and large-scale electrical grids. [16][17][18][19] It is well accepted that the performance of energy storage devices mainly depended on their electrode materials. [20,21] Owing to the advantages of large surface area, light weight, good electrical conductivity, and high thermal/ chemical stability, carbon materials have been considered as the most important electrode materials of supercapacitors and rechargeable batteries [8,20,21] Hence, various nanostructured carbons, such as carbon/graphene quantum dots, [22,23] carbon nanofiber (CNFs), [16,24] carbon nanotubes (CNTs), [13,25] graphene [26][27][28][29][30][31][32] carbon nanosheets, [33,34] 3D carbon nanostructures, [35][36][37] and porous carbon, [38,39] have gained great attention. Among these materials, 3D carbon nanomaterials have some advantages. The interlinked architecture not only shortens transport distances for ions in the well-interconnected wall structure, but also provides a continuous pathway endowing for the fast electron transport. [40] Moreover, the structural interconnectivities guarantee higher electrical conductivity and better mechanical stability. [36,41] Thereby, the design and fabrication of various 3D carbonbased nanostructures, including carbon nanotube networks, graphene gels, graphene foams, and 3D CNFs, have been intensively investigated.Over the past few years, there are many reviews summarizing the progress of fabricating 3D carbon-based nanomaterials. For example, Schneider et al. overviewed the recent advance in the synthesis of 3D arranged carbon nanotube architectures. [42] Li et al. reviewed the carbon-based 3D nanostructures for supercapacitors. [36] Cao and Gui et al. comprehensively reviewed the recent progress in synthesis, properties, and energy applications of CNT sponges, aerogels, and hierarchical composites. [43] The development of high-performance electrochemical energy storage devices is critical for addressing energy crises and environmental pollution.

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“…24 The experimental steps of the preparation of GR/AC composites were as follows: briey, 0.5 g of obtained GR powder and 2.0 g of carbonization based on waste particleboard were rstly added into 10 mL of deionized water and then dispersed by ultrasonication with a power of 300 W for 15 min. Aer that, the KOH and GR/AC with a mass ratio of 3 was added into the dispersion mixture in the ice water bath which kept the temperature of the mixture lower than 30 C. Aer 24 h, the mixtures were then activated at a temperature of 800 C and maintained for 60 min surrounded with nitrogen.…”

Section: Preparation Of Ac/gr Hybridsmentioning

confidence: 99%

Hydrothermal fabrication of reduced graphene oxide/activated carbon/MnO₂ hybrids with excellent electrochemical performance for supercapacitors

Gao

et al. 2017

RSC Adv.

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A graphene/activated carbon/MnO 2 (GAM) composite was synthesized by reacting in a hydrothermal synthesis reactor and maintaining at 140 C for 2 h. MnO 2 anchored on graphene/activated carbon (GR/ AC) sheets and the activated carbon (AC) particles distributed on the graphene (GR) surface provided numerous meso/micropores that act as active sites for the discharge reaction. The GR forms a threedimensional network with excellent electrical conductivity for application. In this study, we focus on the mass ratio of GR/AC and MnO 2 . The test outcome indicated that the GAM electrodes displayed exceptionable electrochemical performances especially when the mass ratio of GR/AC and MnO 2 is 2 : 3. The specific capacitance of GAM has achieved 378 F g À1 at a constant current density of 50 mA g À1 in the 7 M KOH electrolytic solution. Beyond that, the GAM 2 : 3 electrodes have also shown splendid cyclic ability with a 91.58% capacitance retention over 3000 circles. The three dimensional network structure is expected to represent a thrilling orientation for heightening the electrochemical property of MnO 2 and could be generalized for projecting next-generation superior supercapacitors.

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Functional Gels Based on Chemically Modified Graphenes

Cited by 288 publications

References 206 publications

Hybrid materials of 1D and 2D carbon allotropes and synthetic π-systems

Hybrid materials of 1D and 2D carbon allotropes and synthetic π-systems

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

Hydrothermal fabrication of reduced graphene oxide/activated carbon/MnO₂ hybrids with excellent electrochemical performance for supercapacitors

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Functional Gels Based on Chemically Modified Graphenes

Cited by 288 publications

References 206 publications

Hybrid materials of 1D and 2D carbon allotropes and synthetic π-systems

Hybrid materials of 1D and 2D carbon allotropes and synthetic π-systems

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

Hydrothermal fabrication of reduced graphene oxide/activated carbon/MnO2 hybrids with excellent electrochemical performance for supercapacitors

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Product

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Hydrothermal fabrication of reduced graphene oxide/activated carbon/MnO₂ hybrids with excellent electrochemical performance for supercapacitors