Improved Ion Transport in Hydrogel-Based Nanofluidics for Osmotic Energy Conversion

被引:76
作者
Chen, Weipeng [1 ,2 ]
Zhang, Qianru [2 ,3 ]
Qian, Yongchao [1 ,4 ]
Xin, Weiwen [1 ,2 ]
Hao, Dezhao [1 ,2 ]
Zhao, Xiaolu [1 ,2 ]
Zhu, Congcong [1 ,2 ]
Kong, Xiang-Yu [1 ]
Lu, Benzhuo [2 ,3 ]
Jiang, Lei [1 ,2 ]
Wen, Liping [1 ,2 ]
机构
[1] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Bioinspired Mat & Interfacial Sci, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Chinese Acad Sci, Acad Math & Syst Sci, Natl Ctr Math & Interdisciplinary Sci, State Key Lab Sci & Engn Comp, Beijing 100190, Peoples R China
[4] Northwestern Polytech Univ, Sch Sci, Key Lab Space Appl Phys & Chem, Shanxi Key Lab Macromol Sci & Technol,Minist Educ, Xian 710072, Peoples R China
基金
国家重点研发计划; 北京市自然科学基金; 中国国家自然科学基金;
关键词
Energy conversion - Nanofluidics - Ions - Osmosis;
D O I
10.1021/acscentsci.0c01054
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In nature, ultrafast signal transfer based on ion transport, which is the foundation of biological processes, commonly works in a hydrogel-water mixed mechanism. Inspired by organisms' hydrogel-based system, we introduce hydrogel into nanofluidics to prepare a hydrogel hybrid membrane. The introduction of a space charged hydrogel improves the ion selectivity evidently. Also, a power generator based on the hydrogel hybrid membrane shows an excellent energy conversion property; a maximum power density up to 11.72 W/m(2) is achieved at a 500-fold salinity gradient. Furthermore, the membrane shows excellent mechanical properties. These values are achievable, which indicates our membrane's huge potential applications in osmotic energy conversion.
引用
收藏
页码:2097 / 2104
页数:8
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