3D-Printed piezoelectric nanogenerator with aligned graphitic carbon nitrate nanosheets for enhancing piezoelectric performance

O Y Pawar; Sooman Lim

doi:10.1016/j.jcis.2023.10.105

3D-Printed piezoelectric nanogenerator with aligned graphitic carbon nitrate nanosheets for enhancing piezoelectric performance

J Colloid Interface Sci. 2024 Jan 15;654(Pt B):868-877. doi: 10.1016/j.jcis.2023.10.105. Epub 2023 Oct 21.

Authors

O Y Pawar¹, Sooman Lim²

Affiliations

¹ Department of Flexible and Printable Electronics, LANL-JBNU Engineering Institute, Jeonbuk National University, Jeonju 54896, Republic of Korea.
² Department of Flexible and Printable Electronics, LANL-JBNU Engineering Institute, Jeonbuk National University, Jeonju 54896, Republic of Korea. Electronic address: smlim@jbnu.ac.kr.

PMID: 37898071
DOI: 10.1016/j.jcis.2023.10.105

Abstract

Carbon-based materials are attracting increasing attention in the field of electronic devices because of their nontoxicity, availability, low cost, and easy synthesis. In this study, we fabricated a printed piezoelectric nanogenerator (PENG) based on a Polyvinylidene fluoride (PVDF) and graphitic carbon nitrate (g-C₃N₄) composite. Piezoelectric films with different weight percentages (0, 5, 7.5, 10, and 15 wt%) of g-C₃N₄ nanosheets (CNNSs) were fabricated. The PVDF/CNNS with 7.5% CNNS exhibited higher performance. We observed that the printing process aligned all CNNS along the x-axis, which improved stress management and eventually improved the performance of the fabricated device. The fabricated device exhibited better performance without pooling and generated a peak-to-peak voltage of 6.65 V with a current of 0.195 µA, corresponding to a power density of 4.86 µW/cm². The device generated a voltage of up to 18.8 V with footsteps.

Keywords: Alignment; Graphitic carbon nitrate; Non-toxic materials; Piezoelectric nanogenerator; Printed fabrication.