A green and efficient method to produce graphene for electrochemical capacitors from graphene oxide using sodium carbonate as a reducing agent
Source abstract
Abstract
Abstract The green and efficient synthesis of graphene using sodium carbonate (Na2CO3) as a chemical reducing agent was studied. Extensive characterization confirmed the formation of graphene from graphene oxide using a Na2CO3 solution. The C/O atomic ratio of the as-prepared graphene has increased from 2.48 to 8.15 after reduction as determined by X-ray photoelectron spectroscopy. The conductivity of as-prepared graphene sheets is as high as 10 S m−1. After electrochemical measurements, gravimetric capacitances of 228 and 166 F g−1 at current densities of 5 and 25 mA cm−2, respectively, were obtained with KOH electrolyte.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Graphene research and applications · Supercapacitor Materials and Fabrication · Advancements in Battery Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Electric field effect in atomically thin carbon film10.1126/science.1102896 ↗
2. The rise of graphene10.1038/nmat1849 ↗
3. Screening and interlayer coupling in multilayer graphene field-effect transistors10.1021/nl901396g ↗
4. Electrochemical sensing and biosensing platform based on chemically reduced graphene oxide10.1021/ac900136z ↗
5. Supercapacitor devices based on graphene materials10.1021/jp902214f ↗
6. Recent advances in graphene based polymer composites10.1016/j.progpolymsci.2010.07.005 ↗
7. Pillared graphene: a new 3-D network nanostructure for enhanced hydrogen storage10.1021/nl801417w ↗
8. Transparent, conductive graphene electrodes for dye-sensitized solar cells10.1021/nl072838r ↗
9. Efficient preparation of large-area graphene oxide sheets for transparent conductive films10.1021/nn1015506 ↗
10. Ultrathin epitaxial graphite: 2D electron gas properties and a route toward graphene based nanoelectronics10.1021/jp040650f ↗
11. Wafer scale homogneous bilayer graphene films by chemical vapor deposition10.1021/nl1029978 ↗
12. Simple method of preparing graphene flakes by an arc-discharge method10.1021/jp900791y ↗
13. Liquid phase production of graphene by exfoliation of graphite in surfactant/water solutions10.1021/ja807449u ↗
14. Longitudinal unzipping of carbon nanotubes to form graphene nanoribbons10.1038/nature07872 ↗
15. Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide10.1016/j.carbon.2007.02.034 ↗
16. New insights into the structure and reduction of graphite oxide10.1038/nchem.281 ↗
17. Vitamin C is an ideal substitute for hydrazine in the reduction of graphene oxide suspensions10.1021/jp100603h ↗
18. Reduction of graphene oxide via l-ascorbic acid10.1039/B917705A ↗
19. Preparation of graphitic oxide10.1021/ja01539a017 ↗
20. Langmuir–Blodgett assembly of graphite oxide single layers10.1021/ja806262m ↗
21. Deoxygenation of exfoliated graphite oxide under alkaline conditions: a green route to graphene preparation10.1002/adma.200801306 ↗
22. Graphene/polyaniline nanofiber composites as supercapacitor electrodes10.1021/cm902876u ↗
23. In-situ synthesis and characterization of electrically conductive polypyrrole/graphene nanocomposites10.1016/j.polymer.2010.10.014 ↗
24. Fast and facile preparation of graphene oxide and reduced graphene oxide nano sheets10.1021/cm901247t ↗
25. Raman spectra of graphite oxide and functionalized graphene sheets10.1021/nl071822y ↗
26. Raman spectrum of graphene and graphene layers10.1103/PhysRevLett.97.187401 ↗
27. Facile syhthesis and characterization of graphene nanosheets10.1021/jp710931h ↗
28. Hydrothermal dehydration for the green reduction of exfoliated graphene oxide to graphene and demonstration of tunable optical limiting properties10.1021/cm9006603 ↗
29. High yield preparation of macroscopic graphene oxide membranes10.1021/ja807934n ↗
30. Fast and reversible surface redox reaction of graphene-MnO2 composites as supercapacitor electrodes10.1016/j.carbon.2010.06.047 ↗