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Electrode Lithiation: Effects of Particle Size, Electronic Connectivity, and Incoherent Nanoscale Domains on the Sequence of Lithiation in LiFePO 4 Porous Electrodes (Adv. Mater. 42/2015)
Author(s) -
Li Yiyang,
Meyer Sophie,
Lim Jongwoo,
Lee Sang Chul,
Gent William E.,
Marchesini Stefano,
Krishnan Harinarayan,
Tyliszczak Tolek,
Shapiro David,
Kilcoyne Arthur L. David,
Chueh William C.
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201570286
Subject(s) - electrode , materials science , porosity , nanoscopic scale , glassy carbon , particle (ecology) , battery (electricity) , nanotechnology , electrochemistry , sequence (biology) , cyclic voltammetry , composite material , physics , chemistry , power (physics) , oceanography , quantum mechanics , geology , biochemistry
On page 6591, W. Chueh and co‐workers use high‐resolution X‐ray microscopy to study the sequence of lithiation in LiFePO 4 battery electrodes and reveal that local electronic connectivity limits the rate capability. 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.