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

被引：1

作者：

Khadka, Ashwin ^{[1
]}

Samuel, Edmund ^{[2
,3
]}

Joshi, Bhavana ^{[1
]}

Aldalbahi, Ali ^{[4
]}

Periyasami, Govindasami ^{[4
]}

Lee, Hae-Seok ^{[2
,3
]}

Yoon, Sam S. ^{[1
]}

机构：

[1] Korea Univ, Sch Mech Engn, Seoul 02841, South Korea

[2] Korea Univ, Grad Sch Energy & Environm, KU KIST Green Sch, Energy Environm Policy & Technol, Seoul 02841, South Korea

[3] Korea Univ, Dept Integrat Energy Engn, Seoul 02841, South Korea

[4] King Saud Univ, Coll Sci, Dept Chem, Riyadh 11451, Saudi Arabia

来源：

NANO ENERGY | 2025年 / 139卷

基金：

新加坡国家研究基金会;

关键词：

Piezoelectric nanogenerator; Electrospinning; Carbon nanofiber; PVDF; BETA-PHASE; NANOCOMPOSITE; ALPHA; TRANSFORMATION;

D O I：

10.1016/j.nanoen.2025.110991

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 beta-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.

引用

页数：12

共 54 条

[1] Enhanced Piezoelectric Properties of Electrospun Poly(vinylidene fluoride)/Multiwalled Carbon Nanotube Composites Due to High β-Phase Formation in Poly(vinylidene fluoride) [J].