Thermal Efficiency of Solar Steam Generation Approaching 100% through Capillary Water Transport

被引：268

作者：

Liang, Hanxue ^{[1
]}

Liao, Qihua ^{[2
]}

Chen, Nan ^{[1
]}

Liang, Yuan ^{[3
]}

Lv, Guiqin ^{[1
]}

Zhang, Panpan ^{[2
]}

Lu, Bing ^{[1
]}

Qu, Liangti ^{[1
,2
,4
]}

机构：

[1] Beijing Inst Technol, Sch Chem & Chem Engn, Minist Educ China, Key Lab Cluster Sci,Key Lab Photoelect Electropho, Beijing 100081, Peoples R China

[2] Tsinghua Univ, Dept Mech Engn, State Key Lab Tribol, Minist Educ China,Key Lab Adv Mat Proc Technol, Beijing 100084, Peoples R China

[3] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100084, Peoples R China

[4] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2019年 / 58卷 / 52期

基金：

北京市自然科学基金;

关键词：

capillary water transport; reduced graphene oxide (rGO) foam; solar steam generation; thermal efficiency; water purification; GRAPHENE; DESALINATION; NANOPARTICLES; EVAPORATION; TECHNOLOGY; ENERGY;

D O I：

10.1002/anie.201911457

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solar-driven interfacial water evaporation yield is severely limited by the low efficiency of solar thermal energy. Herein, the injection control technique (ICT) achieves a capillary water state in rGO foam and effectively adjusts the water motion mode therein. Forming an appropriate amount of capillary water in the 3D graphene foam can greatly increase the vapor escape channel, by ensuring that the micrometer-sized pore channels do not become completely blocked by water and by exposing as much evaporation area as possible while preventing solar heat from being used to heat excess water. The rate of solar steam generation can reach up to 2.40kgm(-2)h(-1) under solar illumination of 1kWm(-2), among the best values reported. In addition, solar thermal efficiency approaching 100% is achieved. This work enhances solar water-evaporation performance and promotes the application of solar-driven evaporation systems made of carbon-based materials.

引用

页码：19041 / 19046

页数：6

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