Design and tailoring of a hierarchical graphene-carbon nanotube architecture for supercapacitors

Yang, Shao-Ming; Chang, Kuo‐Hsin; Tien, Hsi-Wen; Lee, Ying-Feng; Li, Shin-Ming; Wang, Yusheng; Wang, Jen‐Yu; Chen‐Chi, M.; Hu, Chi‐Chang

doi:10.1039/c0jm03199b

Cited by 396 publications

(212 citation statements)

References 26 publications

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“…Graphene and composites containing graphene and carbon nanotubes play an important role in the development of new electrodes for capacitors [1,2] and other energy storage devices [3]. The preparation of graphene from graphene oxide has been achieved via the Hummers method [4] with a reducing agent such as hydrazine [5,6], hydroquinone [7], sodium borohydride (NaBH 4 ) [8], or ascorbic acid (LAA) [9].…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of reduced graphene oxide/MWNTs nanocomposite supercapacitor materials tested as electrophoretically deposited films on glassy carbon electrodes

et al. 2013

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. (2013). Facile synthesis of reduced graphene oxide/MWNTs nanocomposite supercapacitor materials tested as electrophoretically deposited films on glassy carbon electrodes. Journal of Applied Electrochemistry, 43 (9), 865-877.Facile synthesis of reduced graphene oxide/MWNTs nanocomposite supercapacitor materials tested as electrophoretically deposited films on glassy carbon electrodes AbstractThis paper reports on a facile synthesis method for reduced graphene oxide (rGO)/multi-walled carbon nanotubes (MWNTs) nanocomposites. The initial step involves the use of graphene oxide to disperse the MWNTs, with subsequent reduction of the resultant graphene oxide/MWNTs composites using l-ascorbic acid (LAA) as a mild reductant. Reduction by LAA preserves the interaction between the rGO sheets and MWNTs. The dispersion-containing rGO/MWNTs composites was characterized and electrophoretically deposited anodically onto glassy carbon electrodes to form high surface area films for capacitance testing. Pseudo capacitance peaks were observed in the rGO/MWNTs composite electrodes, resulting in superior performance with capacitance values up to 134.3 F g-1 recorded. This capacitance value is higher than those observed for LAA-reduced GO (LAA-rGO) (63.5 F g-1), electrochemically reduced GO (EC-rGO) (27.6 F g-1), or electrochemically reduced GO/MWNTs (EC-rGO/MWNTs) (98.4 F g-1)-based electrodes. AbstractThis paper reports on a facile synthesis method for reduced graphene oxide (rGO)/multi-

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Section: Introductionmentioning

confidence: 99%

Facile synthesis of reduced graphene oxide/MWNTs nanocomposite supercapacitor materials tested as electrophoretically deposited films on glassy carbon electrodes

et al. 2013

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“…As a prospective category of layered material, graphene nanosheets (GNSs), have been broadly researched in numerous domains such as conductive materials, 1 energy devices, 2,3 sensors, 4 polymer nanocomposites, 5 because of the peculiar structure, superior electrical conductivity, excellent thermal and mechanical performances. In recent years, GNSs have given rise to continuous attention in fire safety.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Graphene with Layered Molybdenum Disulfide and Their Synergistic Reinforcement on Reducing Fire Hazards of Epoxy Resins

Wang

Zhou

Yang

et al. 2013

Ind. Eng. Chem. Res.

112

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In this work, molybdenum disulfide (MoS 2 )−modified graphene (MoS 2 /GNS) hybrids were prepared by the hydrothermal method and characterized by X-ray diffraction (XRD), Laser Raman spectroscopy (LRS) and transmission electron microscope (TEM). The characterization results show layered molybdenum disulfide was deposited on the surface of graphene nanosheets (GNSs) and grahene oxide was reduced simultaneously. Thermogravimetric analysis results of MoS 2 , GNS and MoS 2 /GNS hybrids showed that incorporation of MoS 2 increased the thermal oxidation resistance of the graphene evidently. Compared to pure epoxy resins (EP), the addition of MoS 2 /GNS hybrids into EP enhanced the onset thermal degradation temperature (T onset ) with an 53°C increment under air atmosphere and an 18°C increment under nitrogen atmosphere. The addition of MoS 2 /GNS hybrids endows excellent flame retardant properties to EP, confirmed by the dramatically reduced peak heat release rate value and total heat release value. Moreover, the addition of MoS 2 /GNS hybrids dramatically decreased the smoke products.

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“…3, the as-synthesized GO has C-C (284.4 eV) bonds and high concentrations of oxygen functional groups such as C-OH (286.1 eV), epoxy C-O-C (286.6 eV), C=O (287.4 eV), and O-C=O (288.4 eV) [13,15]. The C1s spectrum of the as-synthesized GO also includes a π-π* satellite peak (around 292 eV).…”

Section: Resultsmentioning

confidence: 99%

Anti-Wear Effect of Graphene Oxide in Lubrication by Fluorine-Containing Ionic Liquid for Steel

et al. 2015

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Although fluorine-containing ionic liquids have excellent lubricity as liquid lubricants for steels, strong tribochemical reactions leading to severe wear are occurred during friction. Recently, it is reported that graphene oxide (GO) dispersed in water and oils exhibit good anti-wear property. In this study, in order to investigate anti-wear effect of GO in lubrication of fluorine-containing ionic liquids for steel, tribological properties of mixtures of GO with concentrations of 0.2, 2, and 10 mass% and an ionic liquid ([BMIM][BF 4 ]) were investigated on a steel surface. Under the pure ionic liquid lubrication, a strong tribochemical reaction occurred, resulting in corrosion wear. Under a GO-ionic liquid mixture lubrication with 0.2 mass% GO, wear was much lower than for the pure ionic liquid lubrication. Adding GO would inhibit the strong tribochemical reaction. However, wear was high with the 10 mass% GO-ionic liquid mixture. The GO-ionic liquid mixtures did not greatly decrease the friction coefficient.

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Design and tailoring of a hierarchical graphene-carbon nanotube architecture for supercapacitors

Cited by 396 publications

References 26 publications

Facile synthesis of reduced graphene oxide/MWNTs nanocomposite supercapacitor materials tested as electrophoretically deposited films on glassy carbon electrodes

Facile synthesis of reduced graphene oxide/MWNTs nanocomposite supercapacitor materials tested as electrophoretically deposited films on glassy carbon electrodes

Surface Modification of Graphene with Layered Molybdenum Disulfide and Their Synergistic Reinforcement on Reducing Fire Hazards of Epoxy Resins

Anti-Wear Effect of Graphene Oxide in Lubrication by Fluorine-Containing Ionic Liquid for Steel

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