Environment-resisted flexible high performance triboelectric nanogenerators based on ultrafast self-healing non-drying conductive organohydrogel. (April 2021)

• Record Type: Journal Article
• Authors: Huang, Long-Biao; Dai, Xingyi; Sun, Zhenhua; Wong, Man-Chung; Pang, Sin-Yi; Han, Jiancheng; Zheng, Qiuqun; Zhao, Cheng-Han; Kong, Jie; Hao, Jianhua
• Is Part Of: Nano energy. Volume 82(2021)
• Publication Date: 2021-04
• Subjects: Triboelectric nanogenerators -- Environment-resisted -- Self-healing -- Non-drying -- Organohydrogel; 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.2020.105724
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Triboelectric nanogenerator (TENG), a promising energy harvesting technique, has attracted intense research interests in recent years for its applicability in portable and wearable electronics. Self-powered sensors with high sensitivity based on TENG have been widely reported. However, for practical applications, the survivability of TENG in harsh working environments is a vital issue which must be addressed. Herein, we report a hydrophobic, icephobic, and ultrafast self-healing TENG with outstanding non-drying and non-freezing properties for energy harvesting and self-powered sensor. Due to the excellent environment resistance and conductive capability of organohydrogel, the TENG shows much better electrical output stability in a wide temperature range than conventional hydrogel-based TENG which suffers from being frozen at low temperature and dried at high temperature. Moreover, the ultrafast self-healing function enables the electrical output performance of the TENG rapidly restore without delay. The TENG in this work demonstrates an open-circuit voltage of 157 V, a short-circuit current of 16 µA, and a short-circuit charge of 29 nC. The maximum output power density reaches up to 710 mW m −2 . This research might pave a new road for novel applications of TENG in harsh environments with reliable output performance and self-healing capability for practical applications. Graphical Abstract: An icephobic, and ultrafast self-healing TENG with thermal-resist, non-drying, and non-freezing properties is designed. The novel TENG shows excellent electrical output and stability at a wide temperature range from −30 to 80 °C. The ultrafast self-healing property of the device provides TENG with excellent recovery of electric output without delay. The proposed strategy is general, contributing to future sustainable energy and wearable devices. ga1 Highlights: An environment-resisted, icephobic, and ultrafast self-healing triboelectric nanogenerator (TENG) with excellent electrical outputs has been developed. Based on the anti-freezing and non-drying organohydrogel, the TENG can survive from −30 to 80 °C. The ultrafast self-healing function enables the device output performance timely recover without delay.