Yang Changjun, Wang Yan, Wang Yamei, Wang Zelinlan, Guo Yurun, Zhang Liwen, Liu Xiaolin, Chen Huawei
School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, China.
School of Mechanical Engineering, Dalian University of Technology, Dalian, 116024, China.
Adv Sci (Weinh). 2025 Aug;12(31):e05363. doi: 10.1002/advs.202505363. Epub 2025 May 28.
Liquid-solid triboelectric nanogenerators (LS-TENGs) can be widely utilized for droplet energy harvesting, in which slippery modification of triboelectric layer is crucial for output enhancement. However, classical slippery lubricant-infused surfaces suffer from the blocked triboelectric effect and the poor durability. Herein, a controllable phase separation method is reported to disperse skeleton-enhanced lubricant particles on triboelectric layer, leading to the development of a stretchable slippery triboelectric nanogenerator (SS-TENG) based on a modified slippery triboelectric layer and a liquid metal electrode. The dispersed lubricant particles (DLPs) ensure triboelectric effect between droplet and triboelectric layer, in addition to improving energy harvesting and charge transfer efficiencies. As a result, the open circuit voltage significantly increases from 0.9 to 14.4 V, with a transfer charge density of 6.95 × 10 C m L. The embedded skeleton within lubricant particle significantly improves the durability of triboelectric layer, ensuring nearly no decline in output performance of SS-TENG during long-term operation. Furthermore, the SS-TENG exhibits stable output even under 300% stretching, as the DLPs remain firmly anchored to triboelectric layer during deformation. Owing to its excellent triboelectric performance, durability, and flexibility, the SS-TENG can be integrated into various objects to harvest raindrop energy and power electronic devices.
液固摩擦电纳米发电机（LS-TENGs）可广泛用于液滴能量收集，其中摩擦电层的光滑改性对于提高输出至关重要。然而，传统的注入光滑润滑剂的表面存在摩擦电效应受阻和耐久性差的问题。在此，报道了一种可控相分离方法，用于在摩擦电层上分散骨架增强型润滑剂颗粒，从而基于改性的光滑摩擦电层和液态金属电极开发出一种可拉伸的光滑摩擦电纳米发电机（SS-TENG）。分散的润滑剂颗粒（DLPs）除了提高能量收集和电荷转移效率外，还确保了液滴与摩擦电层之间的摩擦电效应。结果，开路电压从0.9 V显著增加到14.4 V，转移电荷密度为6.95×10 C m L。润滑剂颗粒内嵌入的骨架显著提高了摩擦电层的耐久性，确保了SS-TENG在长期运行期间输出性能几乎没有下降。此外，即使在300%拉伸下，SS-TENG仍表现出稳定的输出，因为DLPs在变形过程中仍牢固地锚定在摩擦电层上。由于其优异的摩擦电性能、耐久性和柔韧性，SS-TENG可集成到各种物体中以收集雨滴能量并为电子设备供电。
