改性铝集流体电容去离子电极制备及性能研究  

Fabrication and Properties of Modified Aluminum Plate Current Collector for Capacitive Deionization Electrodes

作　　者：黄国霞 谢华东 甄海鹏 付江涛[2] 

机构地区：[1]青海盐湖海纳化工有限公司,青海西宁 [2]武汉科技大学环境污染绿色控制与修复技术研究中心,湖北武汉

出　　处：《化学工程与技术》2018年第6期358-366,共9页Hans Journal of Chemical Engineering and Technology

基　　金：国家自然科学基金(51574185);国家科技支撑计划项目(2015BAB18B01)。

摘　　要：以碱刻蚀、电化学腐蚀和镀锌镍合金方式对纯铝片进行改性后作为电容去离子(CDI)电极集流体,改性活性炭粉为活性材料制作CDI电极。采用扫描电镜、电化学工作站表征改性后铝片的微观结构和CDI电极的电化学特性。对比改性铝片集流体CDI和泡沫镍集流体CDI的去离子和脱附效果。结果表明:改性后的铝集流体导电性、耐腐蚀性、电极活性成分粘附性好。相比泡沫镍集流体CDI,改性铝片集流体CDI内电阻更低,双电层电容性能更优,脱盐效果更高。Capacitor deionization (CDI) electrodes were fabricated with alkaline etching, electrochemical corrosion and zinc nickel alloy coating modified pure Al plate as the current collector, and modified activated carbon powder as the active material. The microstructure and electrochemical characteristics were analyzed by SEM and electrochemical workstation. Comparison studies were conducted on the electrosorption and desorption performances of modified Al plate current col-lector CDI and nickel foam current collector CDI. The results show that after modification, Al plate has good electrical conductivity, corrosion resistance and active material adhesion. Compared with nickel foam current collector CDI, the intrinsic resistance of modified Al current collector CDI is lower, electrical double layer capacitive performance is better, and the deionization efficiency is higher.

关 键 词：电容去离子 铝 改性 集流体 

分 类 号：TM9[电气工程—电力电子与电力传动]