In this work, lithium (Li) intercalation into molybdenum disulfide (MoS₂) is observed by in situ transmission electron microscope (TEM). A solid-state electrochemical reaction is carried out in a vacuum of TEM column using an electrochemical probe holder. The Li-intercalation proceeds radially from a connecting point between Li₂O and MoS₂. The 2H-1 T structural transition of the MoS₂ layer accompanied by the lithiation is identified by electron diffractions. The electron energy loss spectra (EELS) of the lithiated and non-lithiated areas indicated that the electronic properties of the MoS₂ layer changed after the lithiation.

中文翻译：

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电化学锂嵌入MoS _2的原位电子显微镜观察

在这项工作中，通过原位透射电子显微镜（TEM）观察到锂（Li）嵌入二硫化钼（MoS ₂）中。使用电化学探针支架在TEM柱的真空中进行固态电化学反应。Li插层从Li ₂ O和MoS ₂之间的连接点径向进行。通过电子衍射鉴定出伴随有锂化的MoS ₂层的2H-1 T结构转变。锂化和非锂化区域的电子能量损失谱（EELS）表明，锂化后MoS ₂层的电子性能发生了变化。