新型炭材料（中英文）2024，Vol.39Issue(3)：561-572,12.DOI:10.1016/S1872-5805(24)60854-1
等离子体辅助制备炭布负载大层间距NiCoAl-LDHs及其电化学去离子性能
Plasma-assisted preparation of NiCoAl-layered double hydroxides with a large interlayer spacing on carbon cloth for electrochemical deionization
摘要
Abstract
Capacitive deionization has been considered an emerging desalination technique in recent years,especially for its economic and energy-saving characteristics for brackish water.However,there are currently few studies on chloride ion removal electrodes,and the slow desalination kinetics limits their development.Ar-NiCoAl-layered double hydroxide(LDHs)@ACC materials with an increased interlayer spacing were prepared by the in-situ growth of NiCoAl-LDHs nanosheet arrays on acid-treated carbon cloth(ACC)and subsequent argon plasma treatment.The carbon cloth suppresses the agglomeration of the NiCoAl-LDHs nanosheets and improves the electrical conductivity,while the plasma treatment increases the interlayer spacing of NiCoAl-LDHs and improves its hydrophilicity.This provides rapid diffusion channels and more interlayer active sites for chloride ions,achieving high desalination kinetics.A hybrid capacitive deionization(HCDI)cell was assembled using Ar-NiCoAl-LDHs@ACC as the chloride ion removal electrode and activated carbon as the sodium ion removal electrode.This HCDI cell achieved a high desalination capacity of 93.26 mg g-1 at 1.2 V in a 1 000 mg L-1 NaCl solution,a remarkable desalination rate of 0.27 mg g-1 s-1,and a good charge efficiency of 0.97.The capacity retention remained above 85%after 100 cycles in a 300 mg L-1 NaCl solution at 0.8 V.The work provides new ideas for the controlled preparation of two-dimensional metal hydroxide materials with a large interlayer spacing and the design of high-performance electrochemical chlorine ion removal electrodes.关键词
电化学去离子/海水淡化/大层间距/NiCoAl-LDHs/高除盐动力学Key words
Electrochemical deionization/Desalination/Enhanced interlayer space/NiCoAl-LDHs/High desalination kinetics分类
通用工业技术引用本文复制引用
姜秋彤,王国庆,李益,黄宏伟,李倩,杨建..等离子体辅助制备炭布负载大层间距NiCoAl-LDHs及其电化学去离子性能[J].新型炭材料（中英文）,2024,39(3):561-572,12.基金项目
感谢国家自然科学基金(22309081)、江苏省自然科学基金(BK20230320)、江苏省高等学校自然科学研究项目(22KJB430005)和广东省能源转换材料与技术重点实验室项目(MATEC2023KF006). National Natural Science Foundation of China(22309081),Natural Science Foundation of Jiangsu Province(BK20230320),Natural Science Research in Colleges and universities of Jiangsu Province(22KJB430005),Open Project Fund from Guangdong Provincial Key Laboratory of Materials and Technology for Energy Conversion,and Guangdong Technion-Israel Institute of Technology(MATEC2023KF006). （22309081）
