电容去离子技术在离子选择性分离中的研究进展

As an emerging ion separation technology, capacitive deionization (CDI) is well known for its ability to selective removal of targeted ions, and has attracted extensive attention in the fields of environmental protection and energy conversion in recent years. This article delves into the distinctive CDI advantages in ion-selective removal, focusing on the characteristics of electrode pore structure, the application of numerical simulation methods in CDI research, and the analysis of its research developments. In terms of electrode pore structure characteristics, we analyze the studies on selective adsorption of cation and anion and propose three hypotheses about selectivity: valence-type, affinity-type, and size-type. We also discuss the underlying selectivity mechanisms of CDI under various effects. In terms of numerical simulations, we summarize the application of macroscopic mass transfer models, Lattice Boltzmann methods, and Molecular dynamics simulations in CDI research, demonstrating their crucial roles in the analysis and optimization of the adsorption process in CDI. By summarizing and analyzing the current state of CDI selectivity research, we aim to provide valuable insights for further in-depth exploration of this technology.