Micro-fabricated Liquid Encapsulated Energy Harvester with Polymer Barrier Layer as Liquid Electret Interface

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Bu, L.^1 ; Xu, H.Y.^1 ; Xu, B.J.^1 ; Song, L.^2

School of Information Engineering, China University of Geosciences, Beijing, China^1

State Grid Jibei Electric Power Co., Ltd., Beijing, China^2

关键词: Barrier layers;    Corona charging;    Energy Harvester;    Interface structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012036/pdf
DOI  :  10.1088/1742-6596/557/1/012036

来源: IOP

【 摘 要 】

This paper addresses the electret discharge issue for liquid based electret energy harvesters. An interface structure of PDMS/PTFE polymer barrier layer between liquid and electrets is introduced, achieving 75% charge retain rate over 100h, compared with 0% without the proposed layer over 100h. Further, the PDMS/PTFE layer is introduced into liquid encapsulated energy harvester (LEEH) and is compatible with micro-fabrication process. The retain rate of device voltage is about 47%∼65% over 100h. At 100h after corona charging, the device generates maximally 3.7V, 0.55μW @1Hz rotation.