Xie Yaxuan, You Qingzhang, Bo Wenjing, Jiang Tao, Zheng Mingli, Wang Peijie, Liang Xi, Wang Zhong Lin
Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing, 100048, P. R. China.
School of Science, Inner Mongolia University of Science and Technology, Baotou, 014010, P. R. China.
Adv Mater. 2025 Sep;37(37):e2506186. doi: 10.1002/adma.202506186. Epub 2025 Jun 25.
Liquid-solid triboelectric nanogenerators (TENGs) offer a viable approach for harvesting water energy to power Internet of Things systems. Semiconductor-based TENGs leveraging the tribovoltaic effect have recently emerged as a focus of research. In this paper, monolayer molybdenum disulfide (ML-MoS) is introduced as a contacting material for fabricating direct current (DC) liquid-solid nanogenerators. At the internal liquid-solid interface, electron transfer is strongly evidenced by Raman and photoluminescence spectra. For the external characteristics, macroscopic DC outputs are assessed under various conditions, with a maximum current density of 11.1 mA m. Correlating external output patterns with interfacial charge dynamics, a complete working mechanism of the liquid-solid tribovoltaic effect is better elucidated. This work advances innovative strategies for water energy harvesting, deepening fundamental insights into liquid-solid interactions and the tribovoltaic effect.
液固摩擦电纳米发电机（TENGs）为收集水能以驱动物联网系统提供了一种可行的方法。利用摩擦光伏效应的基于半导体的TENGs最近已成为研究热点。在本文中，单层二硫化钼（ML-MoS）被引入作为制造直流（DC）液固纳米发电机的接触材料。在内部液固界面处，拉曼光谱和光致发光光谱有力地证明了电子转移。对于外部特性，在各种条件下评估宏观直流输出，最大电流密度为11.1 mA m。将外部输出模式与界面电荷动力学相关联，能更好地阐明液固摩擦光伏效应的完整工作机制。这项工作推进了水能收集的创新策略，深化了对液固相互作用和摩擦光伏效应的基本认识。
