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A droplet‐based electricity generator with ultrahigh instantaneous output and short charging time 被引量:4
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作者 Nan Zhang Huimin Zhang +6 位作者 Wanghuai Xu Haojie Gu shimeng ye Huanxi Zheng Yuxin Song Zuankai Wang Xiaofeng Zhou 《Droplet》 2022年第1期56-64,共9页
The past several years have witnessed the rapid development in effectively transforming randomly distributed water kinetic energy into electrical energy,especially triggered by the emergence of droplet‐based electric... The past several years have witnessed the rapid development in effectively transforming randomly distributed water kinetic energy into electrical energy,especially triggered by the emergence of droplet‐based electricity generators(DEG).Despite this,it still suffers from relatively low average power density,which is also achieved at the cost of long charging time,the time to reach stable and saturated surface charge density either through continuous droplet impingement or precharging.Although the harvested energy per droplet in DEG remains as the dominant metric,ultrahigh instantaneous output and short charging time are equally important in some specialized applications such as instantaneous luminescence.Here,we conduct systematical modeling and optimization to build the link between the hydrodynamic and electrical systems,which enables us to determine ultrahigh instantaneous output and short charging time by tailoring parameters such as dielectric layer thickness,droplet ion concentration,and external load.We envision that this strategy in achieving ultrahigh instantaneous output as well as shortening charging time would provide insights and design routes for water energy harvesting. 展开更多
关键词 specialized CHARGING GENERATOR
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