摘要
采用改性CNT*作为CDI电极导电剂,制备AC*/CNT*复合电极,考察其脱盐性能。利用BET、FTIR和TEM对AC或CNT的表面结构、官能团种类和分散性进行分析。利用电化学工作站和SEM对复合电极的比电容、阻抗和表面形貌进行分析。结果表明,通过改性,AC*的比表面积达到672.48 m2/g,增加了29.43%;CNT*的比表面积为117.39 m2/g,下降了9.94%,但其分散性得到有效改善。根据循环伏安测试和静态脱盐实验结果 ,按AC*∶CNT*∶PVDF=7.2∶0.8∶2质量比制备的电极效果最好,比电容高达130.48 F/g,比吸附量达到7.29 mg/g。
CNT＊is used as CDI electrode conductor to make AC＊/CNT＊composite electrode,and its desalination performance is studied. BET,FTIR and TEM are utilized to analyze the surface structure,types of functional groups and dispersion of AC or CNT. The specific capacitance,impedance and surface morphology of composite electrode are analyzed by electrochemical workstation and SEM. The result showed that after modification,the specific surface area of AC＊reaches 672. 48 m2/g,increasing by 29. 43%,while the specific surface area of CNT＊is 117. 39 m2/g,reducing by 9. 94%,and dispersion of CNT＊has been improved effectively. Based on the results of cyclic voltammetry and static desalination,the effect of electrodes prepared by AC＊,CNT＊and PVDF according to the mass ratio of 7. 2∶ 0. 8∶ 2 is best,of which the specific capacitance and specific adsorption capacity are as high as 130. 48 F/g and 7. 29 mg/g,respectively.
作者
马力
王黎
夏正海
王泽
付江涛
MA Li;WANG Li;XIA Zheng-hai;WANG Ze;FU Jiang-tao(College of Natural Resource and Environment Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;Sinopee Wuhan Company, Wuhan 430082, China)
出处
《应用化工》
CAS
CSCD
北大核心
2018年第4期716-720,729,共6页
Applied Chemical Industry
基金
国家科技支撑计划项目(2015BAB18B01)
湖北省自然科学基金项目(2016CFA086)
关键词
电容去离子
活性炭
碳纳米管
改性
脱盐
capacitive deionization
activated carbon
carbon nanotube
modification
desalination
