Hybrid hydrovoltaic electricity generation driven by water evaporation

查看全文 作　　者：Xuemei [1,2]Li;Gu [2]Feng;Yiding [1,3]Chen;Jidong [1]Li;Jun [1,3]Yin;Wei [1]Deng;Wanlin [1,3]Guo

机构地区：[1]State Key Laboratory of Mechanics and Control of Mechanical Structures,Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education,Institute for Frontier Science,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;[2]College of Material Science and Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;[3]College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出　　处：《Nano Research Energy》索引2024年第3卷第2期,共9页

基　　金：the National Natural Science Foundation of China(Nos.T2293691,12172176,12272181,12311530052,and 12150002);the National Key Research and Development Program of China(No.2019YFA0705400);Natural Science Foundation of Jiangsu Province(Nos.BK20220074,BK20211191,and BK20212008);the Research Fund of State Key Laboratory of Mechanics and Control for Aerospace Structures(MCMS-I-0421G01 and MCMS-I-0422K01);the Fundamental Research Funds for the Central Universities(NE2023003,NC2023001,NJ2023002,and NJ2022002);the Fund of Prospective Layout of Scientific Research for NUAA(Nanjing University of Aeronautics and Astronautics). 摘　　要：Water evaporation is a ubiquitous natural process exploiting thermal energy from ambient environment.Hydrovoltaic technologies emerged in recent years offer one prospective route to generate electricity from water evaporation,which has long been overlooked.Herein,we developed a hybrid hydrovoltaic generator driven by natural water evaporation,integrating an“evaporation motor”with an evaporation-electricity device and a droplet-electricity device.A rotary motion of the“evaporation motor”relies on phase change of ethanol driven by water-evaporation induced temperature gradient.This motion enables the evaporation-electricity device to work under a beneficial water-film operation mode to produce output of~4 V and~0.2μA,as well as propels the droplet-electricity device to convert mechanical energy into pulsed output of~100 V and~0.2 mA.As different types of hydrovoltaic devices require distinctive stimuli,it was challenging to make them work simultaneously,especially under one single driving force.We here for the first time empower two types of hydrovoltaic devices solely by omnipresent water evaporation.Therefore,this work presents a new pathway to exploiting water evaporation-associated ambient thermal energy and provides insights on developing hybrid hydrovoltaic generators. 关键词：hybrid hydrovoltaic generator ambient thermal energy evaporation motor water evaporation

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Hybrid hydrovoltaic electricity generation driven by water evaporation

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