PPy/AC电极的理化性能表征及电吸附除盐性能研究  

The physicochemical properties and electroadsorption desalting performance of PPy/AC electrode

作　　者：王玥 李海红[1] 王娟[1] 张茜 WANG Yue;LI Haihong;WANG Juan;ZHANG Qian(College of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an 710048, China;Xi'an System Sensor Electronics Company Limited, Xi'an 710065, China)

机构地区：[1]西安工程大学环境与化学工程学院,西安710048 [2]西安盛赛尔电子有限公司,西安710065

出　　处：《功能材料》2020年第1期1109-1114,共6页Journal of Functional Materials

基　　金：陕西省重点研发计划资助项目(2017YG-151);陕西省教育厅科研计划资助项目(18JK0354);陕西省教育厅科研计划资助项目(19JK0369)

摘　　要：为了提高活性炭电极在电吸附去离子实验中的除盐效果,实验采用化学原位合成法对活性炭进行负载聚吡咯改性,得到聚吡咯改性活性炭(PPy/AC)并制备电极,研究PPy/AC电极在硝酸钾溶液中的电吸附除盐性能。利用SEM、接触角测试仪、CV、EIS和GCD等多种表征手段分析改性前后活性炭电极的理化性质和电化学特性。结果表明,改性之后,活性炭电极的平均接触角从85.7°减小到60.45°,润湿性变好;比电容由89.66 F/g增加到283.5 F/g,提高了68.37%;电极的导电性变好,电阻变低,离子扩散属于半无限扩散过程;经过100次循环伏安测试后,比电容仅降低了20%,电极具有较好的循环稳定性和再生性。In order to improve the desalination effect of activated carbon electrode in the electric adsorption desalination experiment,in-situ chemical synthesis method was used to modify activated carbon loaded polypyrrole,and the electric adsorption desalination performance of PPy/AC electrode in potassium nitrate solution was studied.The physicochemical properties and electrochemical properties of activated carbon electrode before and after modification were analyzed by various characterization methods such as SEM,contact angle tester,CV,EIS and GCD.After modification,the average contact angle of the activated carbon electrode decreased from 85.7°to 60.45°,and the wettability became better.The specific capacitance increased from 89.66 F/g to 283.5 F/g,which was increased by 68.37%.The conductivity of the electrode became better and the resistance was decreased.The ion diffusion belonged to semi-infinite diffusion process.After 100 cycles of voltammetry,the specific capacitance was only reduced by 20%,and the electrode had better cycle stability and regenerability.

关 键 词：聚吡咯 活性炭 电吸附 比电容 再生性 

分 类 号：TQ424.1[化学工程]