School of Integrative Biological & Chemical Sciences Faculty Publications and Presentations

Document Type

Article

Publication Date

9-2025

Abstract

Triboelectric nanogenerators (TENGs) have garnered significant research interest due to their ability to harvest mechanical energy efficiently. In this study, we report a TENG composed of polydimethylsiloxane (PDMS) and polyvinyl alcohol (PVA) as triboelectric layers. To enhance charge generation in the PDMS composite polymer, we incorporated lithium niobate (LiNbO3) nanoparticles, leveraging their piezoelectric and ferroelectric properties. The LiNbO3 nanoparticles were synthesized using a solid-state reaction method, resulting in two distinct phases: triclinic LiNbO3 and monoclinic LiNb3O8. Various weight percentages of LiNbO3 and LiNb3O8 nanoparticles were added to the PDMS matrix to optimize power generation. The maximum open-circuit voltage (VOC) and short-circuit current (Isc) were achieved with 7 wt% LiNbO3 and LiNb3O8 added to the PDMS. The corresponding values were approximately 2.54 V and 10.24 V, and 170 nA and 2 μA, respectively. Furthermore, the fabricated TENG was employed to harvest energy from raindrops and human body movement. Using tap water as a raindrop source, the maximum VOC was found to be approximately 2.25 V at a water pressure of 8 N/cm². The TENG also demonstrated remarkable capability in sensing human physiological motions, such as during regular walking, running, and jumping.

Comments

http://creativecommons.org/licenses/by-nc-nd/4.0/

Publication Title

Nano Trends

DOI

10.1016/j.nwnano.2025.100123

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