Droplet-Enabled Controllable Manipulation of Tribo-Charges from Liquid-Solid Interface  

作　　者：Xunjia Li Jianjun Luo Jianfeng Ping Zhong Lin Wang 

机构地区：[1]College of Biosystems Engineering and Food Science,Zhejiang University,Hangzhou 310058,China [2]CAS Center for Excellence in Nanoscience,Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing 101400,China [3]Innovation Platform of Micro/Nano Technology for Biosensing,ZJU-Hangzhou Global Scientific and Technological Innovation Center,Zhejiang University,Hangzhou 311215,China [4]School of Nanoscience and Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [5]Yonsei Frontier Lab,Yonsei University,Seoul 03722,Republic of Korea

出　　处：《Engineering》2025年第2期132-142,共11页工程(英文)

基　　金：supported by the Natural Science Foundation of Zhejiang Province(LZ22C130001);the National Natural Science Foundation of China(32171887,and 52002028,and 52192610);the National Key Research and Development Project from Minister of Science&Technology(2021YFA0202704);Beijing Municipal Science&Technology Commission(Z171100002017017).

摘　　要：Efficient utilization of electrostatic charges is paramount for numerous applications,from printing to kinetic energy harvesting.However,existing technologies predominantly focus on the static qualities of these charges,neglecting their dynamic capabilities as carriers for energy conversion.Herein,we report a paradigm-shifting strategy that orchestrates the swift transit of surface charges,generated through contact electrification,via a freely moving droplet.This technique ingeniously creates a bespoke charged surface which,in tandem with a droplet acting as a transfer medium to the ground,facilitates targeted charge displacement and amplifies electrical energy collection.The spontaneously generated electric field between the charged surface and needle tip,along with the enhanced water ionization under the electric field,proves pivotal in facilitating controlled charge transfer.By coupling the effects of charge self-transfer,contact electrification,and electrostatic induction,a dual-electrode droplet-driven(DD)triboelectric nanogenerator(TENG)is designed to harvest the water-related energy,exhibiting a two-orderof-magnitude improvement in electrical output compared to traditional single-electrode systems.Our strategy establishes a fundamental groundwork for efficient water drop energy acquisition,offering deep insights and substantial utility for future interdisciplinary research and applications in energy science.

关 键 词：Solid-liquid interface engineering Energy harvesting device Triboelectric nanogenertor Interface charge utilization Water energy 

分 类 号：O441.1[理学—电磁学] O35[理学—物理]