新型电容除离子（CDI）电极的制备与表征
关键词 化工尾水 电容除盐 活性炭材料 TiO2纳米孔
毕业论文设计说明书外文摘要
Title Preparation and characterization of a novel capacitive desalination （CDI） electrode
Abstract
A novel kind of titanium base carbon film capacitive desalination （CDI） electrode was successfully prepared for the application in the treatment of chemical tailwater. The glucose （C6H12O6） and nickel acetate (NiAc2) were used as the precursor, then, the CDI electrode was obtained by the process of titanium plate anodic oxidation, vacuum induction, molding in the high temperature and surface modification. By the above process, the capacitive carbon layer can be stably attached to the surface of titanium based plate. The result reveals that the ideal pore structure can be obtained on condition that the constant voltage and reacting time is 20V and 1 hour, respectively. The capacitive carbon material layer had been adhered equably and steadily to the electrode surface. The carbon film electrode with 0.2g/L nickel was further demonstrated which has the best performance. The 24-hours-reflux of 5M nitric acid solution was used to improve the hydrophilicity of the surface at 50℃; The final electrode capacitance can get as high as 270F/g with well charge and discharge performance; The oxygen evolution potential of the optimum electrode is about 2V. The largest desalination rate is about 83.1% under the treatment load of 2 L/m2.
Keywords chemical tailwater capacitive desalination TiO2 nanopore activated carbon material
目 次
1 绪论 1
1.1 研究背景 1
1.2 电容除盐（CDI）技术研究历史和进展 2
1.3 电容除离子（CDI）技术理论 3
1.3.1 双电层（electrical double layer，EDL）理论 3
1.3.2 赝电容器储能原理 4
1.4 电极材料 4
1.4.1 石墨 5
1.4.2 活性炭及活性炭纤文 5
1.4.3 炭气凝胶 5
1.4.4 炭纳米管 5
1.5 课题的任务及意义 5
1.5.1 实验计划及流程图 6
２ 材料与方法．８
2.1 实验试剂与材料 8
2.1.1 实验试剂 8
2.1.2 实验材料 8
2.2 实验装置 8
2.2.1 实验中用到的仪器 8