Liang Yu, Song Youheng, Sun Yuchen, Luo Lan, Wang Jing, He Junjie
Department of Science and Technology, Yunnan Agricultural University, Kunming, 650201, China.
College of Architecture and Engineering, Yunnan Agricultural University, Kunming, 650201, China.
Sci Rep. 2025 Mar 29;15(1):10837. doi: 10.1038/s41598-025-95292-4.
The global water scarcity crisis is escalating, necessitating the urgent development of innovative water treatment technologies to address freshwater shortages. Capacitive Deionization (CDI) stands out due to its efficient and environmentally friendly advantages. In the application of CDI, researching electrode materials to achieve higher adsorption capacities is crucial. Tableting electrodes have advantages as they can increase mass loading, but they are seldom discussed in the field of capacitive water purification. Therefore, this study applies tableting electrodes to CDI, breaking through the low mass loading bottleneck (50 mg cm), and explores their desalination effect and kinetics. We found that at a voltage window of 0-1.2 V and a flow rate of 10 ml min, tableting electrodes had the best desalination effect. The desalination ability in different salt solutions is greatly influenced by ion diffusion performance, with the best performance observed in LiCl solution (8.9 mg g). Additionally, the manufacturing process of tableting electrodes has the advantages of simple operation, environmental friendliness, and low cost. This study explores for the first time the kinetics and desalination effect of tableting electrodes in CDI devices, providing informational references for the application of tableting electrodes in capacitive desalination.
全球水资源短缺危机正在升级，迫切需要开发创新的水处理技术来应对淡水短缺问题。电容去离子化（CDI）因其高效和环保的优势而脱颖而出。在CDI的应用中，研究电极材料以实现更高的吸附容量至关重要。压片电极具有可以增加质量负载的优点，但在电容式水净化领域很少被讨论。因此，本研究将压片电极应用于CDI，突破了低质量负载瓶颈（50 mg/cm²），并探索了它们的脱盐效果和动力学。我们发现，在0-1.2 V的电压窗口和10 ml/min的流速下，压片电极具有最佳的脱盐效果。不同盐溶液中的脱盐能力受离子扩散性能的影响很大，在LiCl溶液中表现最佳（8.9 mg/g）。此外，压片电极的制造过程具有操作简单、环境友好和成本低的优点。本研究首次探索了压片电极在CDI装置中的动力学和脱盐效果，为压片电极在电容式脱盐中的应用提供了信息参考。
