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Nonuniform and highly localized Li dendrites are known to cause deleterious and, in many cases, catastrophic effects on the performance of rechargeable Li batteries. However, the mechanisms of cathode failures upon contact with Li metal are far from clear. In this study, using in situ transmission electron microscopy, the interaction of Li metal with well‐defined, epitaxial thin films of LiCoO2, the...
In article number 1803108, Yingge Du and co‐workers directly visualize the interaction of Li dendrites with well‐defined epitaxial LiCoO2 thin films at the atomic scale using in situ transmission electron microscopy. Li atoms are shown to selectively attack the LiCoO2 crystal along the [001] direction, generating a large number of grain boundaries and anti‐phase boundaries that are rich in Li2O at...
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