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Electronic Conductivity in the Li 4/3 Ti 5/3 O 4 –Li 7/3 Ti 5/3 O 4 System and Variation with State‐of‐Charge as a Li Battery Anode
Author(s) -
Young David,
Ransil Alan,
Amin Ruhul,
Li Zheng,
Chiang YetMing
Publication year - 2013
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201300134
Subject(s) - lithium titanate , spinel , materials science , lithium (medication) , conductivity , diffusion , electronic structure , electrical resistivity and conductivity , analytical chemistry (journal) , chemistry , condensed matter physics , thermodynamics , battery (electricity) , lithium ion battery , physics , metallurgy , medicine , power (physics) , quantum mechanics , chromatography , endocrinology
The electronic conductivity of lithium titanate spinel (Li 4/3 Ti 5/3 O 4 ) is measured as a function of lithiation and temperature. The electronic conductivity of fully lithiated spinel (Li 7/3 Ti 5/3 O 4 ) is 2.46 S cm −1 at 300 K and is weakly thermally activated. High electronic conductivity is observed over a wide lithiation range down to x~0.04 and suggests that lithium chemical diffusion is ionically limited over most of the state of charge regime.