摘要：

增大电极比表面积是提高电容去离子效率的方法之一．通过研究活性炭负载量对电极比表面积的影响，探讨了一种提升炭电极电容去离子性能的有效方法．实验结果表明，增加活性炭负载量可有效提升电极比表面积，电极电容最高可达0.56 F/cm²，表现出较好的电容去离子性能．持续增加活性物质虽对电极内电阻影响较小，但不能进一步提高电极吸附表面，比电容急剧下降．优化电极孔隙结构是提升活性炭电极电吸附性能的有效方法．

关键词: 活性炭, 负载量, 电容去离子

Abstract:

Increasing the specific surface area is a method for improving the capacitance deionization efficiency. Based on the study of the effect of activated carbon loading on electrode specific surface area，a kind of efficient method for improving the deionizaion performance of carbon electrode is discussed. The experimental results show that increasing the loading of activated carbon can effectively improve the specific surface area of electrodes. The electrode capacitance can be as high as 0.56 F/cm²，showing good capacitance deionication performance. Although increasing activated carbon substances continuously does not have much influence on the resistance inside the electrode， it is impossible to make further improvement on the adsorptive surface of the electrode. The specific capacitance declines suddenly and sharply. Optimizing the pore structure of electrodes is an effective method for improving the electro-adsorptive capacity of activated carbon electrodes.

Key words: activated carbon, loading, capacitive deionization

中图分类号: 

• TQ028