title: In situ atomic-scale imaging of phase boundary migration in FePO(4) microparticles during electrochemical lithiation.
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.
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: Yujie
authors.initials: Y
authors.lastname: Zhu
authors.forename: Jiang Wei
authors.initials: JW
authors.lastname: Wang
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Liu
authors.forename: Akihiro
authors.initials: A
authors.lastname: Kushima
authors.forename: Yihang
authors.initials: Y
authors.lastname: Liu
authors.forename: Yunhua
authors.initials: Y
authors.lastname: Xu
authors.forename: Scott X
authors.initials: SX
authors.lastname: Mao
authors.forename: Ju
authors.initials: J
authors.lastname: Li
authors.forename: Chunsheng
authors.initials: C
authors.lastname: Wang
authors.forename: Jian Yu
authors.initials: JY
authors.lastname: Huang
mesh_terms: D004563:Electrochemistry; D005290:Ferric Compounds / Q000737:chemistry*; D007501:Iron / Q000737:chemistry; D008094:Lithium / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D008863:Microspheres; D010710:Phosphates / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; C473349:LiFePO4; D010710:Phosphates; D008094:Lithium; D007501:Iron; C035885:ferric phosphate
keywords: LiFePO4; Lithium; batteries; imaging; in situ TEM; microparticles