Metal–Organic Framework–Derived ZnO‐Assisted β‐Phase‐Stabilized High‐Performance PVDF/ZnO‐PDMS/rGO Nanocomposites as Piezo–Tribo Hybrid Nanogenerator

Abstract

Triboelectric and piezoelectric nanogenerators are explored to harvest electrical energy from the mechanical vibrations. These two effects are explored in a combined way as piezo–tribo hybrid nanogenerator (PTNG). Herein, polyvinylidene fluoride (PVDF)/ZnO nanocomposite where ZnO is synthesized is fabricated by using metal–organic framework precursors. The PTNG is fabricated by PVDF/ZnO nanocomposites coupling with the as‐fabricated poly dimethyl siloxane/reduced graphene oxide nanocomposites. The incorporation of ZnO into the polymer matrix helps to stabilize the β‐phase of the PVDF which improves the piezoelectricity. ZnO not only enhances the piezoelectricity but also influences tribolelectricity indirectly. The as‐fabricated PTNG shows the output of open‐circuit voltage ≈185 V and short‐circuit current ≈14.5 μA and power density of ≈338 μW cm−2 which can light up 40 red light‐emitting diodes (LEDs) in series connection and 22 red LEDs in parallel connection. It can also power up daily portable electronics like digital wrist watch and calculator. This PTNG, as well as, its piezoelectric part can harvest energy from various body part movements like walking, heel pressing, elbow bending, etc.

Innovative Synthesis of Zeolitic Imidazolate Framework by a Stovetop Kitchen Pressure Cook Pot for Triboelectric Nanogenerator

“…[33] Patil et al designed Delonix regia flowers/PTFE-structured TENG showcasing lighting up 210 LEDs and powering an electronic stopwatch. [34] PVDF/ZnO nanocomposites-based TENG-PENG hybrid device could generate a power density of 338 μW cm À2 as reported by Ojha et al [33] This confirms that TENG is effective as an energy harvester and can be utilized for various self-powered applications.…”

“…[ 32 ] MoS2@ZnO enhanced β‐phase Polyvinylidene fluoride (PVDF) nanocomposite‐based energy harvester is capable of harvesting energy from diverse mechanical and biological movements. [ 33 ] Patil et al designed Delonix regia flowers/PTFE‐structured TENG showcasing lighting up 210 LEDs and powering an electronic stopwatch. [ 34 ] PVDF/ZnO nanocomposites‐based TENG‐PENG hybrid device could generate a power density of 338 μW cm −2 as reported by Ojha et al [ 33 ] This confirms that TENG is effective as an energy harvester and can be utilized for various self‐powered applications.…”