论文标题
一种多技术方法，用于理解LICOO2薄膜中的界定损害
A multi-technique approach to understanding delithiation damage in LiCoO2 thin films
论文作者
论文摘要
我们报告使用草酸（C2H2O4）将licoo2薄膜截然然成绩划定，目的是了解与LI化学提取相关的氧化插入氧化物的结构降解。使用包括同步辐射X射线衍射，扫描电子显微镜，微拉曼光谱，光电子光谱和导电原子力显微镜的多技术方法，我们揭示了选择性LI提取和结构损伤之间的平衡。我们确定与表面过程，批量界定和损害产生有关的三种不同的划界方案。我们发现，只有一小部分谷物受到界定过程的影响，这可能会造成局部不均匀性。 LI提取的化学途径为研究界限提供了额外的机会，同时避免了与电解质分解相关的并发症，并可以简化原位测量。
We report on the delithiation of LiCoO2 thin films using oxalic acid (C2H2O4) with the goal of understanding the structural degradation of an insertion oxide associated with Li chemical extraction. Using a multi-technique approach that includes synchrotron radiation x-ray diffraction, scanning electron microscopy, micro Raman spectroscopy, photoelectron spectroscopy and conductive atomic force microscopy we reveal the balance between selective Li extraction and structural damage. We identify three different delithiation regimes, related to surface processes, bulk delithiation and damage generation. We find that only a fraction of the grains is affected by the delithiation process, which may create local inhomogeneities. The chemical route to Li extraction provides additional opportunities to investigate delithiation while avoiding the complications associated with electrolyte breakdown and could simplify in situ measurements.
