Locally Enhanced Flow and Electric Fields Through a Tip Effect for Efficient Flow‑Electrode Capacitive Deionization

作     者：Ziquan Wang Xiangfeng Chen Yuan Zhang Jie Ma Zhiqun Lin Amor Abdelkader Maria‑Magdalena Titirici Libo Deng Ziquan Wang;Xiangfeng Chen;Yuan Zhang;Jie Ma;Zhiqun Lin;Amor Abdelkader;Maria-Magdalena Titirici;Libo Deng

作者机构：College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Research Center for Environmental Functional MaterialsCollege of Environmental Science and EngineeringTongji University1239 Siping RoadShanghai 200092People’s Republic of China Department of Chemical and Biomolecular EngineeringNational University of SingaporeSingapore 117585Singapore Department of EngineeringFaculty of Science and TechnologyBournemouth UniversityTalbot CampusFern BarrowPooleEngland BH125BBUK Institut de Chimie de NiceUniversitéCôte d’AzurUMR CNRS 727228 Av.Valrose06108 NiceFrance Department of Chemical EngineeringImperial College LondonSouth Kensington CampusExhibition RdLondon SW72AZUK 

基　　金：supported by the Shenzhen Science and Technology Program(JCYJ20230808105111022,JCYJ20220818095806013) Natural Science Foundation of Guangdong(2023A1515012267) the National Natural Science Foundation of China(22178223) the Royal Society/NSFC cost share program(IEC\NSFC\223372) 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2025年第17卷第2期

页      码：1-17页

摘      要：Low-electrode capacitive deionization(FCDI)is an emerging desalination technology with great potential for removal and/or recycling ions from a range of ***,it still suffers from inefficient charge transfer and ion transport kinetics due to weak turbulence and low electric intensity in flow electrodes,both restricted by the current ***,a new tip-array current collector(designated as T-CC)was developed to replace the conventional planar current collectors,which intensifies both the charge transfer and ion transport *** effects of tip arrays on flow and electric fields were studied by both computational simulations and electrochemical impedance spectroscopy,which revealed the reduction of ion transport barrier,charge transport barrier and internal *** the voltage increased from 1.0 to 1.5 and 2.0 V,the T-CC-based FCDI system(T-FCDI)exhibited average salt removal rates(ASRR)of 0.18,0.50,and 0.89μmol cm^(-2) min^(-1),respectively,which are 1.82,2.65,and 2.48 folds higher than that of the conventional serpentine current collectors,and 1.48,1.67,and 1.49 folds higher than that of the planar current ***,with the solid content in flow electrodes increased from 1 to 5 wt%,the ASRR for T-FCDI increased from 0.29 to 0.50μmol cm^(-2) min^(-1),which are 1.70 and 1.67 folds higher than that of the planar current ***,a salt removal efficiency of 99.89%was achieved with T-FCDI and the charge efficiency remained above 95%after 24 h of operation,thus showing its superior long-term stability.

主 题 词：Flow-electrode Capacitive deionization Current collector Tip effect Desalination 

学科分类：081704[081704] 08[工学] 0817[工学-轻工类] 081701[081701] 0824[工学-林业工程类] 

核心收录：

D　O　I：10.1007/s40820-024-01531-0

馆 藏 号：203143487...