Improving Solar Vapor Generation by Eliminating the Boundary Layer Inhibition Effect of Evaporator Pores
文献类型： 外文期刊
作者： Zhang, Zhiyang 1 ; Xu, Wenlong 1 ; Wang, Jian 3 ; Hu, Mi 1 ; Zhang, Dongming 5 ; Jia, Lujie 3 ; Kang, Azhen 6 ; Xi, Yonglan 1 ; Ye, Xiaomei 1 ; Cheng, Shuang 3 ; Sun, Enhui 1 ; Chen, Yu 5 ; Wang, Zhijun 5 ; Lin, Hongzhen 3 ; Xiao, Qingbo 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Agroenvironm Downstream Yangtze Plain, Nanjing 210014, Peoples R China
3.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, i Lab, Suzhou 215123, Peoples R China
4.Helmholtz Inst Ulm HIU, D-89081 Ulm, Germany
5.Chengdu Univ, Inst Adv Mat, Chengdu 610106, Peoples R China
6.Southwest Jiaotong Univ, Sch Civil Engn, Dept Bridge Engn, Chengdu 610031, Peoples R China
期刊名称：ACS ENERGY LETTERS （ 影响因子：22.0； 五年影响因子：21.9 ）
ISSN： 2380-8195
年卷期： 2023 年 8 卷 5 期
页码：
收录情况： SCI
摘要： Solar-driven water evaporation is highly demanded in various applications. However, the pore structures of the solar evaporators are commonly randomly designed, which seriously hinder vapor diffusion and thus limit water producibility. Herein, the boundary layer inhibition effect is uncovered for the first time, and we propose that low-tortuosity channels with a reduced boundary layer thickness is adequate for breaking through the long-existing vapor diffusion limitation. As a demo, nature-inspired low-tortuosity channels are constructed for a solar evaporator. Due to elimination of the boundary layer inhibition, the vapor diffusion flux can easily escape from the evaporator, yielding an evaporation rate of 16.8 kg m-2 h-1 under a convective flow of 4.0 m s-1 and 1 sun irradiation. Moreover, the 3D radial interconnection of the channels enables stable water evaporation under an arbitrary direction of convective flow. Our work provides a promising solution to eliminate the boundary layer inhibition effect of a solar evaporator.
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