Integrating PVDF-based piezoelectric nanogenerators with highly conductive carbon nanofibers for energy-harvesting applications

IF 16.8 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy Pub Date : 2025-04-08 DOI:10.1016/j.nanoen.2025.110991

Ashwin Khadka , Edmund Samuel , Bhavana Joshi , Ali Aldalbahi , Govindasami Periyasami , Hae-Seok Lee , Sam S. Yoon

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Abstract

Piezoelectric nanogenerators (PENGs) are gaining popularity in wearable electronics, self-powered devices, and pressure sensors for detecting acoustic, air, and water waves. In this study, electrospun polyacrylonitrile-derived carbon nanofibers (CNFs) were combined with polyvinylidene fluoride (PVDF) nanofibers for PENG applications. Incorporating highly conductive CNFs into the system and applying an electric field during electrospinning increased the electroactive β-phase content of PVDF to 93.2 %, as confirmed by Fourier transform-infrared spectroscopy. CNF inclusion also caused 9.6- and 3.2-fold increments in the power density and piezopotential of PENG. The fabricated PENGs show stable performance over 12,000 cycles of continuous tapping with a force of 20 N at a frequency of 5 Hz. Besides showing promising potential in functional sensing and self-powered devices, the mechanically resilient systems reported in this study can harness energy from biomechanical movements and ultrasonic wave pressure, thereby exhibiting their applicability in healthcare monitoring devices and sensors.

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来源期刊

Nano Energy CHEMISTRY, PHYSICAL-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

30.30

自引率

7.40%

发文量

1207

审稿时长

23 days

期刊介绍： Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem. Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.