The increasing interest in lithium-oxygen batteries (LOB), having the highest theoretical energy densities among the advanced lithium batteries, has triggered the search for in-situ characterization techniques, including Electrochemical Atomic Force Microscopy (EC-AFM). In this work we addressed the characterization of the formation and decomposition of lithium peroxide (Li₂O₂) on a carbon cathode using a modified AFM technique, called Flow Electrochemical Atomic Force Microscopy (FE-AFM), where an oxygen-saturated solution of the non-aqueous lithium electrolyte is circulated through a liquid AFM cell. This novel technique does not require keeping the AFM equipment inside a glove-box, and it allows performing a number of experiments using the same substrate with different electrolytes without disassembling the cell. We study the morphology of Li₂O₂ on graphite carbon using lithium bis(trifluoromethane sulfonyl)imide (LiTFSI) in dimethyl sulphoxide (DMSO) as electrolyte under different operational conditions, in order to compare our results with those reported using other electrolytes and in-situ and ex-situ EC-AFM.

锂氧电池 (LOB) 在先进锂电池中具有最高的理论能量密度，人们对锂氧电池 (LOB) 的兴趣日益浓厚，引发了对原位表征技术的探索，包括电化学原子力显微镜 (EC-AFM)。在这项工作中，我们解决了过氧化锂（Li ₂ O ₂) 在碳阴极上使用改进的 AFM 技术，称为流动电化学原子力显微镜 (FE-AFM)，其中非水锂电解质的氧饱和溶液循环通过液体 AFM 电池。这种新技术不需要将 AFM 设备放在手套箱内，它允许在不拆卸电池的情况下使用相同的基板和不同的电解质进行大量实验。我们使用二甲基亚砜 (DMSO) 中的双（三氟甲磺酰）亚胺锂（LiTFSI）作为电解质，研究了石墨碳上Li ₂ O ₂在不同操作条件下的形态，以便将我们的结果与使用其他电解质和在-situ和易地 欧共体原子力显微镜。