离子液体中的真空一致电化学与氧化物外延相结合
收稿日期: 2024-12-24
修回日期: 2025-04-13
录用日期: 2025-04-24
网络出版日期: 2025-04-24
Vacuum Consistent Electrochemistry in Ionic Liquid Combined with Oxide Epitaxy
Received date: 2024-12-24
Revised date: 2025-04-13
Accepted date: 2025-04-24
Online published: 2025-04-24
我们将最先进“真空一致电化学”技术引入到氧化物与离子液体（IL）界面的研究中。脉冲激光沉积（PLD）是实现纳米级制备高质量氧化物外延薄膜的强大而最精细的技术之一。另一方面，电化学是一种简单、非常灵敏且无损的固液界面分析技术。为了确保此类外延氧化物薄膜以及块状氧化物单晶与IL接口实验的可重复性，我们采用了自制的以IL为电解质的PLD电化学（EC）系统。该系统允许进行从制备定义明确的氧化物电极表面到其电化学分析的全真空实验。研究主题包括氧化物自身特性（如载流子密度和相对介电常数）的电化学评估，以及与IL接触的氧化物的界面特性（如平带电势和双电层电容），最后是对全固态电化学的未来展望。
松本雄司 . 离子液体中的真空一致电化学与氧化物外延相结合[J]. 电化学, 2025 , 31(6) : 2415004 . DOI: 10.61558/2993-074X.3541
We introduce our state-of-the art of “vacuum consistent electrochemistry” to an investigation of the interfaces between oxides and ionic liquid (IL). Pulsed laser deposition (PLD) has been one of the powerful and sophisticated techniques to realize nanoscale preparation of high-quality epitaxial oxide thin films. On the other hand, electrochemistry is a simple, very sensitive, and non-destructive analysis technique for solid-liquid interfaces. To ensure the reproducibility in experiment of the interfaces of such epitaxial oxide films, as well as bulk oxide single-crystals, with IL, we employ a home-built PLD-electrochemical (EC) system with IL as an electrolyte. The system allows one to perform all-in-vacuum experiments during the preparation of well-defined oxide electrode surfaces to their electrochemical analyses. The topics include electrochemical evaluations of the oxide’s own properties, such as carrier density and relative permittivity, and the interfacial properties of oxides in contact with IL, such as flat band potential and electric double layer (EDL) capacitance, ending with future perspectives in all-solid-state electrochemistry.
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