基于有限元方法的CeCl3和NdCl3在LiCl-KCl熔盐中的电极动力学模拟

充分理解锕系元素和镧系元素在熔盐中的行为和性质是实现反应堆乏燃料熔盐电解后处理的关键,然而熔盐电解实验所需的高温环境、腐蚀性熔盐甚至放射性物质等条件限制了实验的广泛开展。为寻求一种低成本且可靠的获取元素在熔盐中性质的途径,采用有限元方法在不同温度下模拟了不同浓度的三氯化铈和三氯化钕在LiCl-KCl熔盐中的循环伏安曲线,并与实验数据做了对比。结果表明,有限元方法能够较为准确地反映实际电化学过程,继而为乏燃料熔盐电解后处理提供数据支持。

Finite element method based electrochemical electrode kinetics simulation for CeCl3 and NdCl3 in LiCl-KCl molten salt

It is the key issue for realizing the electrolytic post-ptreatment of spent fuel to fully understand the behavior and properties of various actinides and lanthanides in the molten salt.However,the high-temperature environment,corrosive molten salt and even radioactive salt required for pyroprocessing experiments limit the extensive development of them.In order to find a low-cost and reliable way to obtain the properties of the elements in the molten salt,the finite element method was utilized to simulate the cyclic voltammetry curves of CeCl3 and NdCl3 in LiCl-KCl molten salt at different temperatures and concentrations.Compared with the experimental data,the results showed that the finite element method can accurately reflect the actual electrochemical process,providing data support for the electrolytic post-ptreatment of spent fuel.