Fabrication and Model Characterization of the Electrical Conductivity of PVA/PPy/rGO Nanocomposite

Abstract

Owing to the numerous advantages of graphene-based polymer nanocomposite, this study is focused on the fabrication of the hybrid of polyvinyl alcohol (PVA), polypyrrole (PPy), and reduced graphene-oxide. The study primarily carried out the experimentation and the mathematical analysis of the electrical conductivity of PVA/PPy/rGO nanocomposite. The preparation method involves solvent/drying blending method. Scanning electron microscopy was used to observe the morphology of the nanocomposite. The electrical conductivity of the fabricated PVA/PPy/rGO nanocomposite was investigated by varying the content of PPy/rGO on PVA. From the result obtained, it was observed that at about 0.4 (wt%) of the filler content, the nanocomposite experienced continuous conduction. In addition, Ondracek, Dalmas s-shape, dose–response, and Gaussian fitting models were engaged for the analysis of the electrical transport property of the nanocomposite. The models were validated by comparing their predictions with the experimental measurements. The results obtained showed consistency with the experimental data. Moreover, this study confirmed that the electrical conductivity of polymer-composite largely depends on the weight fraction of fillers. By considering the flexibility, simplicity, and versatility of the studied models, this study suggests their deployment for the optimal characterization/simulation tools for the prediction of the electrical conductivity of polymer-composites.

Progress towards sustainable energy storage: A concise review

“…The efficient electron mobility between the graphene electrode active material and electrolyte can be attributed to the electrode's large specific surface area and porosity. 83,84 Graphene oxide, reduced graphene oxide, graphene nanoplatelets, and many others are the various terminologies for graphene. Conductive polymers, on the other hand, are conjugated polymers having exceptional electrical conductivity and redox reaction behavior, low toxicity, and less pollution properties.…”

“…Graphene is a carbonaceous material with excellent electrical conductivity, large surface area, high thermal and chemical stabilities, and mechanical strength. The efficient electron mobility between the graphene electrode active material and electrolyte can be attributed to the electrode's large specific surface area and porosity 83,84 . Graphene oxide, reduced graphene oxide, graphene nanoplatelets, and many others are the various terminologies for graphene.…”

Development of Series-Parallel and Neural-Network Based Models for Predicting Electrical Conductivity of Polymer Nanocomposite

“…The datasets for the series-parallel electrical conductivity model were obtained from laboratory experimentation of graphene nanoplatelets loaded-polypyrrole [38] and reduced graphene-oxide loaded polyvinyl alcohol/polypyrrole nanocomposites [39].…”

Response Surface Methodology Optimization in High-Performance Solid-State Supercapattery Cells Using NiCo2S4–Graphene Hybrids

“…Recently, ternary Ni-Co sulfides with rich redox-active sites and variable valence states, such as Ni 2+ /Ni 3+ , Co 2+ /Co 3+ , and Co 3+ /Co 4+ , during the charging and discharging process have been suggested as promising battery-type materials for supercapatteries; however, the low conductivity, easy agglomeration, and poor electrochemical stability of ternary Ni-Co sulfides present a series of problems to be tackled [ 6 , 7 ]. Many results have reported that the combination of high conductivity materials, such as reduced graphene oxide (rGO) or graphene (G) and Ni-Co sulfides using a hydrothermal process, can achieve a synergistic effect, leading to enhanced electrochemical performance [ 8 , 9 , 10 , 11 , 12 ]. Dong et al [ 9 ] prepared Ni x Co y S 4 nanosheets (various Ni-Co ratios) on rGO using a hydrothermal method, and found that the Ni 1.64 Co 2.40 S 4 /rGO electrode delivers a high specific capacitance of 1089 F g −1 at 1 A g −1 .…”