Effect of Annealing on Graphene/PVDF Nanocomposites

Victor K Samoei; Surendra Maharjan; Keiichiro Sano; Ahalapitiya H Jayatissa

doi:10.1021/acsomega.3c00283

Effect of Annealing on Graphene/PVDF Nanocomposites

ACS Omega. 2023 Apr 5;8(15):13876-13883. doi: 10.1021/acsomega.3c00283. eCollection 2023 Apr 18.

Authors

Victor K Samoei¹, Surendra Maharjan¹, Keiichiro Sano², Ahalapitiya H Jayatissa¹

Affiliations

¹ Nanotechnology and MEMS Laboratory, Department of Mechanical, Industrial, and Manufacturing Engineering (MIME), The University of Toledo, Toledo, Ohio 43606, United States.
² Materials & Surface Engineering Research Institute, Kanto Gakuin University, 1162-2 Ogikubo, Odawara-shi, Kanagawa 250-0042, Japan.

Abstract

In this study, the process for tuning the electrical properties of graphene/polyvinylidene fluoride (Gr/PVDF) nanocomposite films by a thermal annealing process is explored. The surface morphology and microstructure of the nanocomposite were characterized. The effect of temperature on the electrical conductivity was investigated by heating and cooling the sample from the room temperature up to 150 °C. The effect of annealing on the electrical conductivity was recorded as a function of annealing temperature. A Hall effect measurement was conducted as a function of annealing temperatures to obtain Hall voltage (V _H), carrier mobility (μ_H), carrier concentration (n _H), Hall coefficient (R _H), resistivity, and carrier conductivity type (n or p). It was found that the films annealed at 150 °C exhibited the best electrical conductivity of Gr/PVDF films. This study may provide an insight into the development and utilization of Gr/PVDF films in future electronics and the potential applications in various sectors such as aerospace, automotive, and biomedical industries.