文献类型：期刊文献

英文题名：High-efficiency electrochemical desalination enabled by nanosheet-structured redox polymer for sustainable and versatile water treatment

作者：Zhang, Peipei[1];Xu, Haoran[1];Yang, Jun[1];Shi, Minjie[1];Lin, Yuqing[2]

机构：[1]Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：282

外文期刊名：WATER RESEARCH

收录：;EI(收录号：20251618239857);WOS:【SCI-EXPANDED(收录号:WOS:001473895500001)】；

基金：This work was supported by the China Postdoctoral Science Foun-dation (2022M711686) and the Joint Project of Industry-University-Research of Jiangsu Province (BY20230490) .

语种：英文

外文关键词：Polymer; Capacitive deionization; Electrochemical desalination; Water treatment; High-efficiency

摘要：Hybrid capacitive deionization (HCDI) has emerged as a promising desalination technology, but its development is hindered by the lack of high-performance organic electrodes with abundant redox-active sites and robust structural stability. To address this challenge, we design a novel two-dimensional it-conjugated polymer (SFPBI) through molecular engineering, integrating multiple redox-active moieties with aromatic reinforcement strategies. Comprehensive electrochemical analysis, supported by in-situ spectroscopic characterization and theoretical calculations, reveals that SFPBI polymer, enriched with C=N and C=O functional groups, enables efficient pseudocapacitive ion adsorption. Its rigid backbone and extensive electron delocalization, characterized by a narrow HOMO-LUMO gap (2.99 eV), ensure exceptional structural stability and electrochemical activity. A HCDI device incorporating the SFPBI electrode achieves a remarkable salt removal capacity of 79.43 mg g(-1), a rapid average removal rate of 2.65 mg g(-1) min(-1), and excellent regeneration stability (similar to 92.01 % retention over 500 cycles), outperforming reported organic electrodes. As a proof of concept, we develop an integrated solarpowered desalination system using interconnected HCDI devices, which not only produces desalinated water meeting human consumption standards but also efficiently removes organic dyes and recovers energy. This study demonstrates a breakthrough in organic electrode design for HCDI, offering a scalable and energy-efficient solution for water desalination and purification.