Chung Jihoon, Cho Handong, Yong Hyungseok, Heo Deokjae, Rim You Seung, Lee Sangmin
School of Mechanical Engineering, Chung-ang University, Seoul, Republic of Korea.
Department of Mechanical Engineering, Mokpo National University, Jeollanam-do, Republic of Korea.
Sci Technol Adv Mater. 2020 Feb 25;21(1):139-146. doi: 10.1080/14686996.2020.1733920. eCollection 2020.
The triboelectric nanogenerator (TENG) is a recent mechanical energy harvesting technology that has been attracting significant attention. Its working principle involves the combination of triboelectrification and electrostatic induction. The TENG can harvest electrical energy from both solid-solid and liquid-solid contact TENGs. Due to their physical difference, triboelectric materials in the solid-solid TENG need to have high mechanical properties and the surface of the liquid-solid contact TENG should repel water. Therefore, the surface of the TENG must be versatile for applications in both solid-solid and liquid-solid contact environments. In this work, we develop a solid-solid/liquid-solid convertible TENG that has a slippery liquid-infused porous surface (SLIPS) at the top of the electrode. The SLIPS consists of a HDFS coated hierarchical Al(OH) structure and fluorocarbon liquid. The convertible TENG developed in this study is capable of harvesting electricity from both solid-solid and liquid-solid contacts due to the high mechanical property of Al(OH) and the water-based liquid repelling nature of the SLIPS. When the contact occurs in freestanding mode, electrical output was generated through solid-solid/liquid-solid sliding motions. The convertible TENG can harvest electricity from both solid-solid and liquid-solid contacts; thus, it can be a unified solution for TENG surface fabrication.
摩擦纳米发电机（TENG）是一种最近引起广泛关注的机械能收集技术。其工作原理涉及摩擦起电和静电感应的结合。TENG可以从固-固和液-固接触式TENG中收集电能。由于它们的物理差异，固-固TENG中的摩擦电材料需要具有高机械性能，而液-固接触TENG的表面应具有拒水性能。因此，TENG的表面必须具有通用性，以便在固-固和液-固接触环境中应用。在这项工作中，我们开发了一种固-固/液-固可转换TENG，其电极顶部具有光滑的注液多孔表面（SLIPS）。SLIPS由涂覆有HDFS的分级Al(OH)结构和碳氟化合物液体组成。本研究中开发的可转换TENG能够从固-固和液-固接触中收集电能，这得益于Al(OH)的高机械性能和SLIPS的拒水特性。当在独立模式下发生接触时，通过固-固/液-固滑动运动产生电输出。该可转换TENG可以从固-固和液-固接触中收集电能；因此，它可以成为TENG表面制造的统一解决方案。
