Temperature difference-enhanced salinity gradient energy conversion enabled by thermostable hydrogel membrane with anti-swelling property

作     者：Zhehua Zhang Teng Zhou Xiang-Yu Kong Yadong Wu Weiwen Xin Yanglansen Cui Linsen Yang Tingyang Li Xin Li Qingchen Wang Weipeng Chen Lei Jiang Liping Wen Zhehua Zhang;Teng Zhou;Xiang-Yu Kong;Yadong Wu;Weiwen Xin;Yanglansen Cui;Linsen Yang;Tingyang Li;Xin Li;Qingchen Wang;Weipeng Chen;Lei Jiang;Liping Wen

作者机构：Key Laboratory of Bio-inspired Materials and Interfacial ScienceTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100049China School of Future TechnologyUniversity of Chinese Academy of SciencesBeijing 100049PChina College of Mechanical and Electrical EngineeringHainan UniversityHaikou 570228China Binzhou Institute of TechnologyBinzhou 256600China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2023年第16卷第8期

页      面：11288-11295页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Key R&D Program of China(Nos.2022YFB3805904,2022YFB3805900,and 2020YFA0710401) the National Natural Science Foundation of China(Nos.22122207,21988102,and 52075138) CAS Key Laboratory of Bio-inspired Materials and Interfacial Science,Technical Institute of Physics and Chemistry(No.BMIS202102) China Postdoctoral Science Foundation(Nos.2022TQ0345,2022M723229,and 2022M713226) Postdoctoral International Exchange Talent-Introducing Program(No.YJ20220199) 

主　　题：ion transport temperature difference-enhanced salinity gradient energy self-crosslinking hydrogel membranes space charge 

摘      要：Coupling low-grade heat(LGH)with salinity gradient is an effective approach to increase the efficiency of the nanofluidic-membrane-based power ***,it is a challenge to fabricate membranes with high charge density that ensures ion permselectivity,while maintaining chemical and mechanical stability in this composite ***,we develop a bis[2-(methacryloyloxy)ethyl]phosphate(BMAP)hydrogel membrane with good thermal stability and anti-swelling property through self-crosslinking of the selected *** taking advantage of negative space charge and three-dimensional(3D)interconnected nanochannels,salinity gradient energy conversion efficiency is substantially enhanced by temperature *** and experimental results verify that LGH can largely weaken the concentration polarization,promoting transmembrane ion *** a result,such a hydrogel membrane delivers high-performance energy conversion with a power density of 11.53 W·m^(−2)under a negative temperature difference(NTD),showing a 193%increase compared with that without NTD.