In Situ Atomic‐Scale Imaging of Phase Boundary Migration in FePO4 Microparticles During Electrochemical Lithiation
- 21 July 2013
- journal article
- research article
- Published by Wiley in Advanced Materials
- Vol. 25 (38) , 5461-5466
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.Keywords
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