Highly Efficient and Durable Piezoelectric Nanogenerator and Photo-power cell Based on CTAB Modified Montmorillonite Incorporated PVDF Film

Abstract

Herein, we have successfully designed two ecofriendly, biocompatible, and cost-effective devices, i.e., a piezoelectric nanogenerator (PENG) and a self-charged photo-power cell (PPC) by developing a multifunctional cetyltrimethylammonium bromide (CTAB) modified montmorillonite (MMT) incorporated poly­(vinylidene fluoride) (PVDF) thin film with large electroactive β crystallites and dielectric properties. Incorporation of CTAB modified MMT in PVDF leads to nucleation of piezoelectric β crystallite (F(β)) ∼ 91% as well as the dielectric constant ∼48 at 3 mass % doping of CTAB-MMT. The enrichment of the electroactive β phase crystallization and high dielectric constant pilot to a good piezoelectricity (d 33) ∼ 62.5 pC/N at 50 Hz of the thin film. Our CTAB-MMT/PVDF based PENG (CMPENG) with superior piezoelectricity shows high output power generation with power density ∼ 50.72 mW/cm3 under periodic finger impartation and having the ability to charge a 1 μF capacitor up to 2.4 V within 14 s under gentle finger impartation. CMPENG also have the potential to glow up commercially available 26 blue light-emitting diodes (LEDs) connected in series. The self-charged PPC has been designed with the thin film in association with MnO2-MWNT/PVP/H3PO4. Our PPC is able to generate supercilious output voltage ∼ 1.38 V and short circuit current ∼ 3.7 mA/cm2under light illumination with specific areal capacitance and energy storage efficiency of ∼1501 F/m2 and ∼93%, respectively. The realistic application of our PPC is investigated by lighting 24 blue LEDs for 7 days with the same intensity by charging the device once for 50 s.

Cooperative modification of PVDF electroactive films due to the exfoliated and oriented Na+‐MMT with assistance of different cationic chain length ionic liquids

“…The CTAB-MMT/PVDF nanogenerator behaved superior piezoelectricity and showed a high-power density of 50.72 MW/cm 3 . 6 A. Kumar employed organically modified MMT to enhance the electrical and electrochemical properties of PVDF-based gel electrolytes. The addition of MMT to PVDF not only reduced the interfacial resistance with lithium electrode but also provided a better electrochemical stability window of 4.6 V. 7 Wang Y. used surfactant to tune the surface charge and the dispersion of MMT in PVDF simultaneously.…”

Self‐Polarized ZrO2/Poly(vinylidene fluoride‐co‐hexafluoropropylene) Nanocomposite‐Based Piezoelectric Nanogenerator and Single‐Electrode Triboelectric Nanogenerator for Sustainable Energy Harvesting from Human Movements

“…Formation of spherulites with lower diameter ≈4–6 μm and uniform distribution of the NPs have been noticed in composite films confirming nucleation of electroactive β phase. [ 31,35 ] Further detailed structure and β phase formation were confirmed by FTIR spectra, XRD pattern, and DSC results.…”

“…Recently, poly(vinylidene fluoride) (PVDF) and its copolymers poly(vinylidene fluoride-co-hexafluoropropene) (PVDF-HFP), poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE), poly (vinylidene fluoride-chloride trifluoride ethylene) (PVDF-CTFE), poly(vinylidene fluoride-trifluoro ethylene-chlorofluoroethylene) (PVDF-TrFECFE), and poly(vinylidene fluoride-trifluoroethylenechloride trifluoride ethylene) (PVDF-TrFE-CTFE) [30][31][32][33][34][35][36] have emerged as the most favorable prospect for designing sophisticated PENGs because of their piezoelectric properties such as light weight, flexible, and environmental compatible. [37] Semicrystalline PVDF has mainly five different types of crystalline polymorphs like α, β, γ, δ, and ε.…”

Preparation and properties of starch‐based polyurethane/montmorillonite composite coatings for controlled‐release fertilizer

“…The DDMAC was first introduced to modify the MMT, which is crucial for its dispersion in the polymer matrix. [34][35][36] When DDMAC was added into MMT suspension, the ion exchange reaction took place. The alkyl-quaternaryammonium cations of DDMAC intercalated into layers of MMT, meanwhile metal cations diffused outwards from layers.…”