电子元件与材料2024，Vol.43Issue(7)：814-821,829,9.DOI:10.14106/j.cnki.1001-2028.2024.0108
相互连接的介孔空心碳球的制备及其在电容去离子(CDI)技术中的应用研究
Preparation of interconnected mesoporous hollow carbon spheres and their application in capacitive deionization(CDI)technology
摘要
Abstract
Using the pore structure of the hollow carbon spheres as the object,an interconnected mesoporous hollow carbon spheres(MHCSs)were successfully synthesized by the modified Stöber method and used as the electrode materials.The effects of the mesoporous structure on the electrochemical and capacitive deionization properties of it were systematically investigated.The results show that comparing with the interconnected hollow carbon spheres(HCSs),which are dominated by microporous structures,MHCSs have larger specific surface area and more active sites thus the specific capacitance of the electrode materials is improved.The large pore size enhances the ion transport rate of the hollow carbon spheres,while the increment of the graphitization increases the electrical conductivity of the electrode materials.As a result,the capacitive deionization performance of the materials is significantly enhanced.The electrochemical adsorption capacities of HCSs and MHCSs reaches 10.01 and 17.81 mg·g-1 in 100 mg·L-1 NaCl solution,respectively,and the MHCSs demonstrates excellent capacitive deionization performance.In addition,after 30 adsorption-desorption cycles,the MHCSs maintain 97.42％of the initial desalination capacity in 100 mg·L-1 NaCl solution,exhibiting good cycling stability.This result provides a useful reference for the application of the mesoporous hollow carbon spheres in the field of seawater desalination and water treatment.关键词
空心碳球/介孔结构/电容去离子/海水淡化Key words
hollow carbon spheres/mesoporous structure/capacitive deionization/seawater desalination分类
信息技术与安全科学引用本文复制引用
胡婧琨,陈素晶,张易宁..相互连接的介孔空心碳球的制备及其在电容去离子(CDI)技术中的应用研究[J].电子元件与材料,2024,43(7):814-821,829,9.基金项目
福建省STS计划配套项目(2021T3055,2022T3026,2020H0040):福州市科技项目(2021-ZD-213) （2021T3055,2022T3026,2020H0040）
