Organic tribovoltaic nanogenerator with electrically and mechanically tuned flexible semiconductor textile. (February 2023)

• Record Type: Journal Article
• Authors: Liu, Guoxu; Luan, Ruifei; Qi, Youchao; Gong, Likun; Cao, Jie; Wang, Zhihao; Liu, Feng; Zeng, Jianhua; Huang, Xinlong; Qin, Yuhan; Dong, Sicheng; Feng, Yuan; Huang, Long-Biao; Zhang, Chi
• Is Part Of: Nano energy. Volume 106(2023)
• Publication Date: 2023-02
• Subjects: Tribovoltaic effect -- PVA doped -- Wear resistance enhancement -- Output enhancement -- Flexible energy harvester; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2022.108075
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Obtaining a wear-resistant, high-output, flexible direct current (DC) friction energy harvester is quite important for implementing self-powered portable electronic devices and Internet of Things (IoT). In this work, a direct current flexible textile organic tribovoltaic nanogenerator (FT-OTG) is reported, which is consisted of blended film of 11.11% poly(3, 4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT: PSS) and 88.89% polyvinyl alcohol (PVA), a hydrophilic conductive ink, a hydrophobic conductive textile and Al slider. The working mechanism of OTG is that after absorbing friction energy, abound electron-hole pairs are excited at the metal-semiconductor interface. These carriers move directionally under the joint drive of electrostatic field and the built-in electric field to form a current. After PVA doping, the output performance of DC-OTG, including open-circuit voltage and short-circuit current, is improved 5.6 times and 4.2 times, respectively. Furthermore, the mechanical properties of blended film, such as wear resistance, elongation and tensile strength, are improved, among which elongation at break is increased by 8 times and tensile strength increased by 3.2 times. By simplify series connecting, 3 FT-OTGs can constantly power portable electronics, like electronic watch, thermometer and calculator, respectively. This work provides an effective way for simultaneously enhanced output performance and mechanical properties of FT-OTG, which is expected to be a robust way for harvesting friction energy for self-powered electronics device and IoT sensors. Graphical Abstract: ga1 Highlights: A direct current FT-OTG is reported. By simplify series connecting, 3 FT-OTGs can constantly power portable electronics. The enhancement mechanism is the ECE and Ebuilt-in field jointly promote the directional motion of charge carriers. After PVA doping, output performance and mechanical performance have been significantly improved.