High-performance self-assembled graphene hydrogels prepared by chemical reduction of graphene oxide
Source abstract
Abstract
Three-dimensional self-assembled graphene hydrogels (SGHs) have been fabricated by chemical reduction of graphene oxide (GO) with sodium ascorbate. The SGHs were characterized by scanning electron microscopy, rheological tests, electrical conductivity measurements, X-ray photoelectron spectroscopy, X-ray diffraction, and Raman spectroscopy. Results indicate that the reduction of GO promotes the assembly of graphene sheets. The SGHs are electrically conductive (1 S·m−1) and mechanically strong and exhibit excellent electrochemical performance. In 1 mol·L−1 aqueous solution of H2SO4, the specific capacitance of SGHs was measured to be about 240 F·g−1 at a discharge current density of 1.2 A·g−1.
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Research context
OpenAlex topics: Graphene research and applications · Supercapacitor Materials and Fabrication · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (46)
Show source-provided references
1. Electric field effect in atomically thin carbon films[J]10.1126/science.1102896 ↗
2. Graphene: status and prospects [J]10.1126/science.1158877 ↗
3. Superior thermal conductivity of single-layer graphene[J]10.1021/nl0731872 ↗
4. Measurement of the elastic properties and intrinsic strength of monolayer graphene[J]10.1126/science.1157996 ↗
5. Processable aqueous dispersions of graphene nanosheets[J]10.1038/nnano.2007.451 ↗
6. Tunable electrical conductivity of individual graphene oxide sheets reduced at “low” temperatures[J]10.1021/nl8019938 ↗
7. Mechanically strong, electrically conductive, and biocompatible graphene pape[J]10.1002/adma.200800757 ↗
8. Chemically derived graphene oxide: towards large-area thin-film electronics and optoelectronics[J]10.1002/adma.200903689 ↗
9. Graphene, a promising transparent conductor[J]10.1016/S1369-7021(10)70034-1 ↗
10. Large-scale pattern growth of graphene films for stretchable transparent electrodes[J]10.1038/nature07719 ↗
11. Functionalized graphene sheets for polymer nanocomposites[J]10.1038/nnano.2008.96 ↗
12. Preparation of gold nanoparticle/graphene composites with controlled weight contents and their application in biosensors[J]10.1021/jp9101724 ↗
13. Strong and ductile poly(vinyl alcohol)/graphene oxide composite films with a layered structure[J]10.1016/j.carbon.2009.08.022 ↗
14. Detection of individual gas molecules adsorbed on graphene[J]10.1038/nmat1967 ↗
15. Enhanced electrocatalytic activity of Pt subnanoclusters on graphene nanosheet surface[J]10.1021/nl900397t ↗
16. Nitrogen-doped graphene as efficient metal-free electrocatalyst for oxygen reduction in fuel cells[J]10.1021/nn901850u ↗
17. Chemically converted graphene as substrate for immobilizing and enhancing the activity of a polymeric catalyst[J]10.1039/c001635g ↗
18. Supercapacitors based on flexible graphene/polyaniline nanofiber composite films[J]10.1021/nn1000035 ↗
19. Graphene-based ultracapacitors[J]10.1021/nl802558y ↗
20. Thinnest two-dimensional nanomaterial—graphene for solar energy[J]10.1002/cssc.201000061 ↗
21. Flexible graphene films via the filtration of water-soluble noncovalent functionalized graphene sheets[J]10.1021/ja800745y ↗
22. Mechanically strong, electrically conductive, and biocompatible graphene paper[J]10.1002/adma.200800757 ↗
23. Self-assembled free-standing graphite oxide membrane[J]10.1002/adma.200803726 ↗
24. Highly conducting graphene sheets and Langmuir-Blodgett films[J]10.1038/nnano.2008.210 ↗
25. Layer-by-layer self-assembly of graphene nanoplatelets[J]10.1021/la900126g ↗
26. Self-assembled graphene hydrogel via a one-step hydrothermal process [J]10.1021/nn101187z ↗
27. Noble-metal-promoted three-dimensional macroassembly of single-layered graphene oxide[J]10.1002/anie.201000270 ↗
28. Efficient reduction of graphite oxide by sodium borohydride and its effect on electrical conductance[J]10.1002/adfm.200900167 ↗
29. Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide[J]10.1016/j.carbon.2007.02.034 ↗
30. Reduction of graphene oxide via L-ascorbic acid[J]10.1039/B917705A ↗
31. Facile and controllable electrochemical reduction of graphene oxide and its applications[J]10.1039/B917975E ↗
32. Controlled synthesis of large-area and patterned electrochemically reduced graphene oxide films[J]10.1002/chem.200900596 ↗
33. Direct electrochemical reduction of single-layer graphene oxide and subsequent functionalization with glucose oxidase[J]10.1021/jp906348x ↗
34. Evaluation of solution-processed reduced graphene oxide films as transparent conductors[J]10.1021/nn700375n ↗
35. Transparent, conductive graphene electrodes for dye-sensitized solar cells[J]10.1021/nl072838r ↗
36. Chemical analysis of graphene oxide films after heat and chemical treatments by X-ray photoelectron and Micro-Raman spectroscopy [J]10.1016/j.carbon.2008.09.045 ↗
37. Perparation of graphitic oxide[J]10.1021/ja01539a017 ↗
38. Chemical methods for the production of graphenes[J]10.1038/nnano.2009.58 ↗
39. Structural and mechanical properties of agar/gelatin co-gels. Small-deformation studies[J]10.1021/ma00242a019 ↗
40. Rheological behavior during thermoreversible gelation of aqueous mixtures of ethyl(hydroxyethyl)cellulose and surfactants[J]10.1021/la00003a014 ↗
41. Rheological characterisation of thermogelling chitosan/glycerol-phosphate solutions[J]10.1016/S0144-8617(00)00281-2 ↗
42. Supramolecular gels: Functions and uses [J]10.1039/b417081b ↗
43. Supramolecular gels ‘in action’ [J]10.1039/b819218a ↗
44. Preparation, structure, and electrochemical properties of reduced graphene sheet films [J]10.1002/adfm.200900377 ↗
45. Chen Y, Zhang X, Zhang D, et al. High performance supercapacitors based on reduced graphene oxide in aqueous and ionic liquid electrolytes [J]. Carbon, In Press.
46. Supercapacitor devices based on graphene materials [J]10.1021/jp902214f ↗