An
Effective Electrical Throughput from PANI Supplement ZnS Nanorods
and PDMS-Based Flexible Piezoelectric Nanogenerator for Power up Portable
Electronic Devices: An Alternative of MWCNT Filler
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Abstract
We demonstrate the requirement of
electrical poling can be avoided in flexible piezoelectric nanogenerators
(FPNGs) made of low-temperature hydrothermally grown wurtzite zinc
sulfide nanorods (ZnS-NRs) blended with polydimethylsiloxane (PDMS).
It has been found that conductive fillers, such as polyaniline (PANI)
and multiwall carbon nanotubes (MWCNTs), can subsequently improve
the overall performance of FPNG. A large electrical throughput (open
circuit voltage ∼35 V with power density ∼2.43 μW/cm<sup>3</sup>) from PANI supplement added nanogenerator (PZP-FPNG) indicates
that it is an effective means to replace the MWCNTs filler. The time
constant (τ) estimated from the transient response of the capacitor
charging curves signifying that the FPNGs are very much capable to
charge the capacitors in very short time span (e.g., 3 V is accomplished
in 50 s) and thus expected to be perfectly suitable in portable, wearable
and flexible electronics devices. We demonstrate that FPNG can instantly
lit up several commercial Light Emitting Diodes (LEDs) (15 red, 25
green, and 55 blue, individually) and power up several portable electronic
gadgets, for example, wrist watch, calculator, and LCD screen. Thus,
a realization of potential use of PANI in low-temperature-synthesized
ZnS-NRs comprising piezoelectric based nanogenerator fabrication is
experimentally verified so as to acquire a potential impact in sustainable
energy applications. Beside this, wireless piezoelectric signal detection
possibility is also worked out where a concept of self-powered smart
sensor is introduced