Bio-inspired functionalization and redox charge transfer of graphene oxide sponges for pseudocapacitive electrodes

Hong, Jin‐Yong; Yu, Xu; Bak, Bo Mee; Pang, Changhyun; Park, Ho Seok

doi:10.1016/j.carbon.2014.11.020

Cited by 29 publications

(16 citation statements)

References 33 publications

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“…To date, different strategies have been developed to obtain different 3D graphene architectures including hydrogels [63], aerogels [64], foams [62,65] and sponges [66]. In addition, 3D graphene has been combined and modified with various types of nanomaterials including metal oxide nanostructures, metal nanoparticles and conductive polymers for supercapacitor applications.…”

Section: D Graphene-based Supercapacitorsmentioning

confidence: 99%

Advances in research on 2D and 3D graphene-based supercapacitors

Mensing

Poochai

Kerdpocha

et al. 2017

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Graphene-based materials in two-dimensional (2D) and three-dimensional (3D) configurations are promising as electrode materials for supercapacitors due to their large surface area, excellent electrical conductivity, high electrochemical activity and high stability. In this article recent advances in research on 2D and 3D graphene-based materials for supercapacitor electrodes are reviewed extensively in aspects of fabrication methods and electrochemical performances. From the survey, the performance of 2D and 3D graphene-based materials could be significantly enhanced by employing nanostructures of metal oxides, metals and polymers as well as doping graphene with hetero atoms such as nitrogen and boron. In addition, the charge storage performances were found to depend greatly on materials, preparation method and structural configuration. With similar material components, 3D graphene-based networks tended to exhibit superior supercapacitive performances. Therefore, future research should be focusing on further development of 3D graphene-based materials for supercapacitor applications.

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Section: D Graphene-based Supercapacitorsmentioning

confidence: 99%

Advances in research on 2D and 3D graphene-based supercapacitors

Mensing

Poochai

Kerdpocha

et al. 2017

Adv. Nat. Sci: Nanosci. Nanotechnol.

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“…The hydroxyl and amino groups of the dopamine could make it possible to improve the hydrophilicity of membrane. Furthermore, dopamine could be regarded as a benign reducing agent to reduce GO to RGO, which provided more transport channels for water molecules, thereby increasing the flux of membrane eventually . This is very important for the liquid separation of graphene membrane.…”

Section: Introductionmentioning

confidence: 99%

Bio‐inspired method to fabricate poly‐dopamine/reduced graphene oxide composite membranes for dyes and heavy metal ion removal

et al. 2017

Polymers for Advanced Techs

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Due to the narrow layer spacing, graphene oxide (GO) composite membrane usually exhibits a relatively low water flux in the process of wastewater treatment. In this study, GO was reduced to reduced graphene oxide through a bio-inspired method, which was functionalized modified by poly-dopamine (PDA). Then a series of PDA/reduced graphene oxide sheet films were prepared by vacuum filtration on the surface of cellulose acetate membrane (under the pressure of −0.1 MPa). The result indicated that the novel membranes had an excellent stability owing to the cross-link of PDA. In addition, the hydrophilicity of membrane was increased significantly after PDA modification, which presented a superior water flux than pure GO composite membrane. More importantly, as-prepared membranes were successfully applied for the removal of dyes (including Congo red, methylene blue, and rhodamine B) and heavy mental ion (Cu(II)) from simulated wastewater. This work might provide a new method for preparation and application of GO composite membranes.

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“…The ice-templating method, which consists of undirectional freezing of hydrogel and pore-preserving drying method, is more versatile and simpler compared to the afore-mentioned synthetic methods for the construction of the 3D networking structure as exemplified by the graphene sponge [21]. The unidirectional freezing could be achieved by immersion freezing or contact freezing.…”

Section: Introductionmentioning

confidence: 99%