Vanadium salt assisted solvothermal reduction of graphene oxide and the thermoelectric characterisation of the reduced graphene oxide in bulk and as composite
Gnanaseelan M, Samanta S, Pionteck J, Jehnichen D, Simon F, Poetschke P, Voit B (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 229
Pages Range: 319-329
DOI: 10.1016/j.matchemphys.2019.03.002
Abstract
The solvothermal reduction of graphene oxide (GO), modified by the addition of vanadium chloride, resulted in an increased reduction degree of the reduced graphene oxide (rGO), which is reflected by a remarkably increased electrically conductivity of up to 8.5 S/cm, a value 30 times higher than that of rGO prepared without vanadium salt addition. Parallel with this increase, the thermoelectrical properties of rGO are improved, with a reached maximum Seebeck coefficient of 13.7 μV/K. The rGOs were used as fillers in flexible styrene-butadiene-styrene triblock copolymer composites prepared by solution mixing. Compared to the traditionally prepared reduced graphene oxide, the new product provides up to 60 times higher conductivity to the composite, while the Seebeck coefficient is nearly the same. The highest power factor of 4.6 × 10 −4 μW/(m∙K 2 ) was achieved at 100 °C with 30 wt% loading, which is 30 times higher than that of the traditional reduced graphene oxide containing composite.
Involved external institutions
Germany (DE)How to cite
APA:
Gnanaseelan, M., Samanta, S., Pionteck, J., Jehnichen, D., Simon, F., Poetschke, P., & Voit, B. (2019). Vanadium salt assisted solvothermal reduction of graphene oxide and the thermoelectric characterisation of the reduced graphene oxide in bulk and as composite. Materials Chemistry and Physics, 229, 319-329. https://doi.org/10.1016/j.matchemphys.2019.03.002
MLA:
Gnanaseelan, Minoj, et al. "Vanadium salt assisted solvothermal reduction of graphene oxide and the thermoelectric characterisation of the reduced graphene oxide in bulk and as composite." Materials Chemistry and Physics 229 (2019): 319-329.
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