Journal
ACS APPLIED MATERIALS & INTERFACES
Volume -, Issue -, Pages -Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c07911
Keywords
electrospinning; piezoelectric nanogenerator; PENG; PVDF nanofibers; BaTiO3 nanoparticles; self-powered vibrational sensor
Funding
- University Grants Commission (UGC) , India
- Department of Science and Technology (DST) , India [DST/TDT/DDP-07/2021]
- Council of Scientific and Industrial Research (CSIR) , New Delhi [MLP 0062, MLP 0044]
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In the era of intelligent electronics and IoT, there is a high demand for flexible and wearable devices. A flexible piezoelectric nanogenerator based on electrospun PVDF-BT composite nanofibers has been developed, showing enhanced electroactive phase. The device delivers high output power density and can be used for real-time vibration sensing.
In the present era of intelligent electronics and Internet of Things (IoT), the demand for flexible and wearable devices is very high. Here, we have developed a high-output flexible piezoelectric nanogenerator (PENG) based on electrospun poly(vinylidene fluoride) (PVDF)-barium titanate (BaTiO3) (ES PVDF-BT) composite nanofibers with an enhanced electroactive phase. On addition of 10 wt % BaTiO3 nanoparticles, the electroactive beta-phase of the PVDF is found to be escalated to similar to 91% as a result of the synergistic interfacial interaction between the tetragonal BaTiO3 nanoparticles and the ferroelectric host polymer matrix on electrospinning. The fabricated PENG device delivered an open-circuit voltage of similar to 50 V and short-circuit current density of similar to 0.312 mA m(-2). Also, the PVDF-BT nanofiber-based PENG device showed an output power density of similar to 4.07 mW m(-2), which is 10 times higher than that of a pristine PVDF nanofiber-based PENG device. Furthermore, the developed PENG has been newly demonstrated for self-powered real-time vibration sensing applications such as for mapping of mechanical vibrations from faulty CPU fans, hard disk drives, and electric sewing machines.
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