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Enhanced Conductivity and Flexibility in Reduced Graphene Oxide Paper by Combined Chemical-Thermal Reduction
- Source :
- Journal of Electronic Materials. 50:6991-6999
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- Free-standing reduced graphene oxide (rGO) papers were prepared by chemical reduction, thermal reduction and combined chemical-thermal reduction, respectively. Four-point probe and nanoindentation experiments were conducted to investigate the electrical and mechanical properties of rGO papers. The rGO paper prepared by soaking in L-ascorbic acid and thermal annealing in argon at 1000 °C (labeled rGO-AsA-T) showed superior electrical and mechanical properties when compared with rGO papers prepared merely by chemical reduction or thermal reduction. The as-prepared rGO-AsA-T paper exhibited an electrical conductivity of 5.7 × 104 S/m, showing an increase of 90% compared to that in the thermally annealed rGO paper and nearly 40 times that of rGO paper reduced by L-ascorbic acid. It was also found that the rGO-AsA-T paper had the lowest elastic modulus of 288 MPa, showing enhanced flexibility. The nearly free voids in rGO-AsA-T paper proved by scanning electron microscopy (SEM) were due to the capillary action in chemical reduction and were significant in improving the electrical conductivity and flexibility of the paper. The rGO-AsA-T paper with high conductivity and flexibility has a promising application in flexible electronics.
- Subjects :
- Materials science
Graphene
Scanning electron microscope
Oxide
Conductivity
Nanoindentation
Condensed Matter Physics
Electronic, Optical and Magnetic Materials
law.invention
chemistry.chemical_compound
chemistry
law
Electrical resistivity and conductivity
Materials Chemistry
Electrical and Electronic Engineering
Composite material
Thin film
Graphene oxide paper
Subjects
Details
- ISSN :
- 1543186X and 03615235
- Volume :
- 50
- Database :
- OpenAIRE
- Journal :
- Journal of Electronic Materials
- Accession number :
- edsair.doi...........5e2be46fba12acdca3c7be68f90bea05