Energy harvesting and self-powered microphone application on multifunctional inorganic-organic hybrid nanogenerator

Ayesha Sultana, Md. Mehebub Alam, Sujoy Kumar Ghosh, Tapas Ranjan Middya and Dipankar Mandal

Energy, 2019, vol. 166, issue C, 963-971

Abstract: Piezoelectric nanogenerators are forthcoming alternative choices for scavenging different types of wasted mechanical energies. An inorganic-organic hybrid piezoelectric nanogenerator (HPNG) has been realized by incorporating zinc sulphide nanorods (ZnS-NRs) into electrospun poly(vinylidene fluoride) (PVDF) nanofibers for self-powered multifunctional sensing. As an acoustic energy harvester, the HPNG possesses a resonance frequency of 86 ± 3 Hz and an acoustic sensitivity of ∼3 V Pa−1. It can distinguish sound waves from low to mid frequency region that makes it suitable for noise detection. In addition, HPNG demonstrates the very high wind energy conversion efficiency of ∼58% that make it capable of detecting human exhalation. Apart from its noise detection and power generation capabilities, HPNG is possible to use as a self-powered microphone. This electromechanical coupling, integrated with their flexibility, makes it usable as a flexible electro-acoustic sensor for security purpose as well. These results establish the potential of hybrid piezoelectric structure, with their multi functionalities for several promising applications such as noise detection, wind energy harvesting, security monitoring and most promisingly to develop the self-powered system.

Keywords: PVDF; Piezoelectric; Electrospun nanofibers; ZnS nanorods; Wind energy; Acoustic energy; Mechanical energy harvester; Nanogenerator; Self-powered microphone (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:166:y:2019:i:c:p:963-971

DOI: 10.1016/j.energy.2018.10.124

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