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The electrochemical lithiation of FePO4 particles is investigated by in situ high‐resolution transmission electron microscopy (HRTEM), and the anisotropic lithiation mechanism is directly observed. For the first time and in contrast to the previous post mortem HRTEM observations, a sharp (010) phase boundary between LiFePO4 and FePO4 is observed, which migrates along the [010] direction during lithiation...
Tin (Sn) crystal growth on Sn-based anodes in lithium ion batteries is hazardous for reasons such as possible short-circuit failure by Sn whiskers and Sn-catalyzed electrolyte decomposition, but the growth mechanism of Sn crystals during battery cycling is not clear. Here we report different growth mechanisms of Sn crystal during the lithiation and delithiation processes of SnO 2 nanowires...
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