Affiliation:
1. Materials Science and Technology Program, Department of Mathematics, Statistics and Physics, College of Arts and Sciences Qatar University Doha Qatar
2. Center for Advanced Materials Qatar University Doha Qatar
Abstract
AbstractLayered transition metal dichalcogenides (TMDs) with high aspect ratios enhance the alignment of polymer chains and induce a preferred orientation of the polymeric crystallites when incorporated into polyvinylidene fluoride (PVDF). In addition to offering an effective charge‐transfer mechanism, TMDs give PVDF more rigidity and piezoelectric qualities. This work reports the non‐solvent induced phase separation (NIPS) introduced while developing the PVDF/MoS2 composites. During the NIPS, the PVDF chains become phase‐separated, which induces high polarization in the PVDF matrix. Phase‐separated PVDF/MoS2 composites show high porosity and charge distribution attributed to the enhanced piezoelectric output voltage. While the neat PVDF demonstrated very feeble output voltage generation, the hybrid composite containing 2 wt.% of MoS2/ZnO facilitated almost 20 times higher performance (peak‐to‐peak voltage of 2.4 V). This work yielded a phase‐separated composite that finds uses in energy harvesting, sensors, and actuators, among other fields.Highlights
NIPS creates high‐porosity composites with improved charge distribution.
Layered TMDs improve charge‐transfer mechanism and PVDF's electrical properties.
2 wt.% MoS2/ZnO exhibits nearly 20 times higher voltage generation than neat PVDF.