In Situ Atomic‐Scale Imaging of Phase Boundary Migration in FePO 4 Microparticles During Electrochemical Lithiation
2013; Volume: 25; Issue: 38 Linguagem: Inglês
10.1002/adma.201301374
ISSN1521-4095
AutoresYujie Zhu, Jiangwei Wang, Yang Liu, Xiaohua Liu, Akihiro Kushima, Yihang Liu, Yunhua Xu, Scott X. Mao, Ju Li, Chunsheng Wang, Jianyu Huang,
Tópico(s)Electrochemical Analysis and Applications
ResumoThe 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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