Dataset for publication "In Situ Monitoring of the Al(110)-[EMImCl]:AlCl3 Interface by Reflection Anisotropy Spectroscopy"

Dataset are obtained from Reflection anisotropy spectroscopy, CV, SEM/EDX, and computaitonal RAS
The data are sorted according to the Figures of the paper.
Abstract of the paper:
Recently, Al-batteries (AlBs) have become promising candidates for post-lithium batteries, with [EMImCl]:AlCl3 (1:1.5) as the most commonly used electrolyte. However, progress in the development of AlBs is currently hindered by the lack of understanding of its solid-electrolyte interface. Monitoring the structure of this interface under operational conditions by complementary spectroscopy could help to identify and overcome bottlenecks of the system. Reflection anisotropy spectroscopy (RAS), an optical in situ technique, provides access to physical and chemical properties of electrochemical interfaces on an atomistic level. Herein, we report the first example of RAS as an in situ characterization technique for non-aqueous battery systems, investigating an Al(110)-based model system. During chemical pre-treatment in [EMImCl]:AlCl3 , the Al(110) surface passivation film is modified. The oxide film is partially etched while an inhomogeneous passivation layer forms, increasing the surface roughness. Upon electrochemical cycling, applied potential-dependent oscillations of the anisotropy are observed and demonstrate the applicability of RAS to monitor phenomena such as plating/stripping and surface passivation in real-time.

本数据集来源于反射各向异性光谱（Reflection Anisotropy Spectroscopy，RAS）、循环伏安法（Cyclic Voltammetry，CV）、扫描电子显微镜/能量色散X射线谱（Scanning Electron Microscopy/Energy Dispersive X-ray Spectroscopy，SEM/EDX）以及计算RAS分析。
本数据集按照论文中的图表进行分类整理。
论文摘要如下：
近年来，铝电池（Aluminum Batteries，AlBs）已成为后锂离子电池领域极具潜力的候选体系，其中[EMImCl]:AlCl3（1:1.5）是最为常用的电解质。然而，当前铝电池的研发进展受制于对其固液界面（solid-electrolyte interface，SEI）缺乏深入认知。通过互补光谱技术在工作状态下监测该界面的结构，有助于识别并突破该体系的研发瓶颈。反射各向异性光谱（RAS）作为一种光学原位表征技术，能够在原子尺度上获取电化学界面的物理与化学性质。本研究首次将RAS作为非水电池体系的原位表征技术，针对Al(110)基模型体系开展了相关研究。在[EMImCl]:AlCl3体系中进行化学预处理时，Al(110)表面的钝化膜会发生改性：氧化膜被部分刻蚀的同时，会形成不均匀的钝化层，导致表面粗糙度升高。在电化学循环过程中，可观测到各向异性信号随施加电位的周期性振荡，这证明了RAS能够实时监测铝电池中的金属沉积/剥离以及表面钝化等现象。