Nanocarbon-based electrochemical systems for sensing, electrocatalysis, and energy storage

Mao, Xianwen; Rutledge, Gregory C.; Hatton, T. Alan

doi:10.1016/j.nantod.2014.06.011

Cited by 97 publications

(68 citation statements)

References 253 publications

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“…We found that the current response decayed with a decreasing ESA, as expected. More importantly, we found that a rGO/CNT sample with a smaller ESA (0.24 ± 0.05 cm 2 ) than that of rGO-ctrl (0.37 ± 0.04 cm 2 ) still showed a significantly higher current (61 ± 5 µA) compared to the value for rGO-ctrl (3.1 ± 0.2 µA). Therefore, this finding strongly indicates that, in addition to ESA, there must be other important factors that contribute to the superior electrochemical activity of rGO/CNT relative to that of rGO-ctrl.…”

Section: Resultsmentioning

confidence: 68%

“…[1][2] Heterogeneous electron transfer (HET) at solid electrodes, including graphene, is the subject of many theoretical and methodological studies in electrochemistry. 3 Enhancement of the HET activity of graphene materials is key to realizing their potential applications in myriad important areas such as energy storage/conversion, [4][5][6] molecular sensing, [7][8] and electrocatalysis.…”

Section: Introductionmentioning

confidence: 99%

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Remarkably High Heterogeneous Electron Transfer Activity of Carbon-Nanotube-Supported Reduced Graphene Oxide

et al. 2016

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Enhancement of the heterogeneous electron transfer (HET) activities of graphene materials toward redox-active molecules assumes a crucial role in numerous graphene-based electrochemical technologies. Here we discover that carbon nanotube-supported reduced graphene oxide (rGO/CNT) exhibits unusually higher HET activities (including electrocatalytic performance towards dopamine, electron transfer kinetics with Ru(NH 3 ) 6 3+/2+ and Fe(CN) 6 3−/4− , and direct electron transfer efficiencies with cytochrome c and horse radish peroxidase) than does CNT-free rGO with an identical electrochemical surface area and surface chemistry. Through examination of the electronic structure combined with Gerisher-Marcus calculations, the critical factors responsible for this anomalous enhancement of the HET activities in rGO/CNT are identified to be a high density of π electronic states, up-shifting of the Fermi level, and appearance of a pronounced quantum capacitance-dominating character. These results indicate a general strategy to improve the HET properties of graphene by using a π electron-rich substrate to modulate electronic structure, and provide insight into the importance of the quantum capacitance in graphene electrochemistry.

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Section: Resultsmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Remarkably High Heterogeneous Electron Transfer Activity of Carbon-Nanotube-Supported Reduced Graphene Oxide

et al. 2016

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“…The unique properties of graphene (Gr) and recent development of methods of its manufacture have caused strong interest in this novel material, particularly in its application in electronics (Mao et al 2014;Randviir et al 2014;Yuan et al 2014). Few publications concern the use of Gr in textiles in the form of nanocomposites Tian et al 2014;Yuan et al 2014;Zhang et al 2013), as a yarn made from Gr flakes (Jalili et al 2013;Tian et al 2014) or using textiles as a support for Gr particles (Cheng et al 2013;Karimi et al 2015;Molina et al 2013a;Neves et al 2015) and are predominantly aimed at the potential applications of such materials in electronics.…”

Section: Introductionmentioning

confidence: 99%

Modification of cotton fabric with graphene and reduced graphene oxide using sol–gel method

et al. 2017

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Cotton fabrics were modified by xerogel coatings with dispersed particles of graphene (Gr) or reduced graphene oxide (RGO). To obtain a stable dispersion of Gr or RGO in organo-silicon sol, sodium lauryl sulfate as an anionic surfactant was used. The fabrics were padded with the organo-silicon sol containing dispersed Gr or RGO, forming a thin xerogel coating after drying. The fabrics coated with the xerogel containing 0.5-1.5 wt% of RGO or Gr were prepared and examined. The best anti-static properties were obtained for the coating with 1.5 wt% of Gr, whose surface resistance and volume resistance were on the order of 10 5 and 10 3 X, respectively. Such properties make the fabric suitable for protective cloths in the environment with explosive atmosphere.

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“…To obtain ideal electrocatalysts for dye-sensitized solar cells, the nanostructured materials are required to possess large surface area, increased surface active sites, and high conductivity. Among a variety of electrocatalysts, the family of carbon-based nanostructures-in their parent or doped forms-has attracted the interest of the research community [4][5][6]. In recent years, carbon nanomaterials such as graphene, carbon nanotubes (CNTs), and nanofibers have been synthesized by various chemical doping strategies [7].…”

Section: Introductionmentioning

confidence: 99%

Recent Progress on the Synthesis of Graphene-Based Nanostructures as Counter Electrodes in DSSCs Based on Iodine/Iodide Electrolytes

Tasis

2017

Catalysts

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Graphene-based nanomaterials functionalized by different doping strategies have attracted great attention for energy conversion themes, due to their large specific surface area, high conductivity, and appreciable electrocatalytic properties. This mini-review presents an overview of the recent progress in the synthesis of graphene-based nanomaterials as counter electrodes for dye-sensitized solar cells based on iodine/iodide electrolytes, along with challenges and perspectives in this exciting field.

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Nanocarbon-based electrochemical systems for sensing, electrocatalysis, and energy storage

Cited by 97 publications

References 253 publications

Remarkably High Heterogeneous Electron Transfer Activity of Carbon-Nanotube-Supported Reduced Graphene Oxide

Remarkably High Heterogeneous Electron Transfer Activity of Carbon-Nanotube-Supported Reduced Graphene Oxide

Modification of cotton fabric with graphene and reduced graphene oxide using sol–gel method

Recent Progress on the Synthesis of Graphene-Based Nanostructures as Counter Electrodes in DSSCs Based on Iodine/Iodide Electrolytes

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