title: Effects of Particle Size, Electronic Connectivity, and Incoherent Nanoscale Domains on the Sequence of Lithiation in LiFePO₄ Porous Electrodes.
abstract: High-resolution X-ray microscopy is used to investigate the sequence of lithiation in LiFePO4 porous electrodes. For electrodes with homogeneous interparticle electronic connectivity via the carbon black network, the smaller particles lithiate first. For electrodes with heterogeneous connectivity, the better-connected particles preferentially lithiate. Correlative electron and X-ray microscopy also reveal the presence of incoherent nanodomains that lithiate as if they are separate particles.
authors.affiliation: Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA, 94305, USA.
authors.forename: Yiyang
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA, 94305, USA.
authors.forename: Sophie
authors.initials: S
authors.lastname: Meyer
authors.affiliation: Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA, 94305, USA.
authors.forename: Jongwoo
authors.initials: J
authors.lastname: Lim
authors.affiliation: Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA, 94305, USA.
authors.forename: Sang Chul
authors.initials: SC
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
authors.forename: William E
authors.initials: WE
authors.lastname: Gent
authors.affiliation: Advanced Light Source One Cyclotron Road, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
authors.forename: Stefano
authors.initials: S
authors.lastname: Marchesini
authors.affiliation: Advanced Light Source One Cyclotron Road, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
authors.forename: Harinarayan
authors.initials: H
authors.lastname: Krishnan
authors.affiliation: Advanced Light Source One Cyclotron Road, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
authors.forename: Tolek
authors.initials: T
authors.lastname: Tyliszczak
authors.affiliation: Advanced Light Source One Cyclotron Road, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
authors.forename: David
authors.initials: D
authors.lastname: Shapiro
authors.affiliation: Advanced Light Source One Cyclotron Road, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
authors.forename: Arthur L David
authors.initials: AL
authors.lastname: Kilcoyne
authors.affiliation: Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA, 94305, USA.|Stanford Institute of Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
authors.forename: William C
authors.initials: WC
authors.lastname: Chueh
keywords: LiFePO4; X-ray chemical imaging; particle size dependence; ptychography