In this study, we present a novel cell design for liquid electrolyte-based lithium-ion batteries (LIBs) to detect the lithium distribution across an electrode by neutron depth profiling (NDP). This newly developed cell design allows to obtain electrochemical data comparable to a standard laboratory cell making use of 500 μ m diameter holes to assure a homogeneous compression over the entire electrode area. We present operando NDP data recorded during the formation of a porous graphite electrode where we can both distinguish between irreversibly bound lithium within the solid electrolyte interphase (SEI) and reversibly intercalated lithium into graphite, and quantify the lithium concentration profile across the electrode. The amount of lithium reversibly intercalated into the graphite electrode (≈LiC 6 ), based on one lithium per electron of charge (1 Li/e − ), was found to corroborate well with the lithium amount quantified using operando ND...

中文翻译：

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用于中子深度分析的基于液体电解质的锂离子电池设计

在这项研究中，我们提出了一种用于基于液体电解质的锂离子电池（LIB）的新颖电池设计，以通过中子深度分析（NDP）检测整个电极上的锂分布。这种新开发的电池设计允许获得与使用500μm直径的孔的标准实验室电池相当的电化学数据，以确保在整个电极区域上均一地压缩。我们介绍了在多孔石墨电极形成过程中记录的操作NDP数据，我们可以区分固相电解质相（SEI）中不可逆结合的锂和可逆嵌入锂的石墨，并量化整个电极的锂浓度分布。可逆地嵌入石墨电极中的锂量（≈LiC6），