2016
DOI: 10.1039/c6nr02013e
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Hierarchical networks of redox-active reduced crumpled graphene oxide and functionalized few-walled carbon nanotubes for rapid electrochemical energy storage

Abstract: Crumpled graphene is known to have a strong aggregation-resistive property due to its unique 3D morphology, providing a promising solution to prevent the restacking issue of graphene based electrode materials. Here, we demonstrate the utilization of redox-active oxygen functional groups on the partially reduced crumpled graphene oxide (r-CGO) for electrochemical energy storage applications. To effectively utilize the surface redox reactions of the functional groups, hierarchical networks of electrodes includin… Show more

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Cited by 31 publications
(27 citation statements)
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“…Lee et al demonstrated the effective use of CNT on aerosol‐made 3D GR/CNTs for enhanced electrochemical energy storage, showing a 3D hierarchical porous structure that enables fast ion and electron transfers through electrodes . These composite electrodes are employed as positive electrodes in Li‐ion capacitors, delivering high gravimetric capacities of 170 mAh g −1 at a current density of 0.1 A g −1 with significantly enhanced rate performance compared to the electrodes of 2D GR CNTs.…”
Section: Aerosol‐made 3d Graphene‐based Composites For Supercapacitormentioning
confidence: 99%
“…Lee et al demonstrated the effective use of CNT on aerosol‐made 3D GR/CNTs for enhanced electrochemical energy storage, showing a 3D hierarchical porous structure that enables fast ion and electron transfers through electrodes . These composite electrodes are employed as positive electrodes in Li‐ion capacitors, delivering high gravimetric capacities of 170 mAh g −1 at a current density of 0.1 A g −1 with significantly enhanced rate performance compared to the electrodes of 2D GR CNTs.…”
Section: Aerosol‐made 3d Graphene‐based Composites For Supercapacitormentioning
confidence: 99%
“…Other crumpled graphene nanocomposites were also reported. For instance, a redox-active crumpled graphene/few-walled carbon nanotubes electrode was created using the partially reduced crumpled graphene oxide and functionalized few-walled carbon nanotubes mixture through vacuum-filtration process [ 78 ]. It was shown that this hierarchical nanostructure can exhibit improved capacities of up to ~ 170 mAh/g and rate capability compared to geometrically different counterpart with a similar composition.…”
Section: Porous Graphenementioning
confidence: 99%
“…It was shown that this hierarchical nanostructure can exhibit improved capacities of up to ~ 170 mAh/g and rate capability compared to geometrically different counterpart with a similar composition. The high capacity and cycling stability can be attributed to fast ion diffusion and electron transport as well as redox-active oxygen-containing functional groups attached on partially reduced graphene oxide sheets and carbon nanotubes [ 78 ].…”
Section: Porous Graphenementioning
confidence: 99%
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“…The electrochemical lithiation/delithiation of oxygen-containing functional groups (OCFGs), i.e. C-O-C, >C=O and COOH, of carbon nanotube (CNT) [1][2][3][4][5][6], graphene [7][8][9][10][11][12][13][14][15][16][17][18][19], CNT/graphene hybrid [20,21] and CNT/carbon sphere hybrid [22] OCFGs on CNTs in a carbonate-based electrolyte improve the capacity significantly [1]. Jang et al figured out that these redox reactions are present in reduced graphene oxide (rGO) as well [7].…”
Section: Introductionmentioning
confidence: 99%