In Situ Atomic‐Scale Imaging of Phase Boundary Migration in FePO4 Microparticles During Electrochemical Lithiation
Source abstract
Abstract
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.
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Research context
OpenAlex topics: Advancements in Battery Materials · Semiconductor materials and interfaces · Electrochemical Analysis and Applications
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