The transistor-inspired Droplet-based Electricity Generator(DEG)significantly enhances the energy collection efficiency from single-position droplets.However,the design of the DEG arrays combining high output performance and large-scale integration under multi-position droplet impacts remains a challenge.Inspired by the unique structure of the honeycomb,we developed an Independent-Cell Droplet-based Electricity Generator(IC-DEG)array that allows for high-efficiency and stable droplet energy harvesting under multi-position droplet impacts.Each independent cell is a transistor-inspired Tubular Droplet-based Electricity Generator(T-DEG),which ensures the high electrical output of the IC-DEG array.The honeycomb-like arrangement improves the space utilization,accelerates the detachment of droplets,and avoids electrical interference among independent cells,all of which further enhance the IC-DEG array performance.The average peak open-circuit voltage of the IC-DEG array is 265.2 V,and 96.6％of peak voltages exceed 200 V,almost double that of a traditional planar array.Moreover,the average droplet detachment time of the IC-DEG array is 44.8 ms,41.4％shorter than the traditional planar array.The enhanced performance of the IC-DEG array is further demonstrated by the high speed of charging capacitors and the capability of driving electronic devices.This study provides a promising design concept for large-scale droplet energy harvesting devices.
Bionic designIndependent-cell arrangementDroplet energy harvestingDroplet-based electricity generator array
Shixu Wang、Xu Wang、Chenguang Lu、Wenna Ge、Quanmao Wei、Yahua Liu
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State Key Laboratory of High-performance Precision Manufacturing,Dalian University of Technology,Dalian 116024,China
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