电化学吸附提锂中Li^(+)传输机制概述

Research Progress on Transport Mechanism of Lithium Ions during Electrochemical Adsorption

近年来受新能源汽车及电子数码行业的影响,锂资源供应市场呈现高价、高需求的趋势。以盐湖卤水为代表的液体锂资源储量丰富、成本低廉,有着广阔的开发市场。在众多锂分离技术中,电化学吸附法在液态锂资源提取方面显示出一定的技术先进性,该方法能够实现低浓度下目标离子的高选择性分离提取,且更加高效环保。针对电化学吸附技术,电场作用下的离子传输过程对提锂性能会产生重要影响。依据离子传输的三个过程,溶液体相、电极-溶液界面以及电极内部,概述了电化学吸附的Li^(+)传输机制,并且总结在各阶段改善离子传输速率的方法,为研究人员开发和应用电吸附体系时提供了参考。

In recent years,the lithium resource market shows the characteristics of high price and active demand under the influence of new energy vehicles and electronic digital industries.The liquid lithium resource represented by salt lake brine has abundant reserves,low cost and a broad development market.Among the lithium separation technologies,the electrochemical adsorption method shows great advantages in extracting liquid lithium resources,which can realize the highly selective separation and extraction of target ions at low concentrations.For electrochemical adsorption technology,the ion transport process under electric field has a significant impact on lithium extraction performance.This review discusses the transport mechanism of lithium ions during electrochemical adsorption based on three transport processes:solution phase,electrode-solution interface,and internal electrode.It could help to inform future researchers in terms of addressing knowledge gaps in developing and applying electrochemical adsorption system.