Theincreasing potential of wearable electronics has been motivating thedevelopment of self-powered devices to overcome the restriction imposed byconventional power supply. Herein, a kind of highly electronegative andconducting material of MXene nanosheet has been innovatively integrated withpoly(vinyl alcohol) (PVA) for electrospinning nanofibers film to fabricate flexibleall-electrospun triboelectric nanogenerator (TENG). Silk fibroin (SF) waschosen for electrospinning nanofibers film to serve as electron donor for TENGwith great triboelectricity and biocompatible nature. The MXene-basedall-electrospun nanogenerator shows excellent stability and durability as wellas extraordinary electrical performance, which supports an instantaneouslymaximum peak power density of 1087.6 mW/m2 as the load resistance is 5.0 MΩ.Moreover, beyond harvesting electrical power, the fabricated TENG was utilizedfor real-time monitoring various types of body motion. Lastly, we used thedeveloped TENG to power electrowetting on dielectric (EWOD) chip to actuatedroplet transport. Considering the excellent triboelectric performance, ease oflarge-scale manufacturing, and environmental friendliness, this MXene-basedall-electrospun TENG provides a promising solution for developing practical,flexible, and self-powered electronic devices.

The first author of this study was Jiang Chengmei, a master'scandidate in Prof. Ping Jianfeng’s group of Zhejiang University. Wu Cui, a PhDstudent in the research group, assisted in the relevant work of dielectricwetting in this study.

Link to the article: https://www.sciencedirect.com/science/article/pii/S221128551930165X