Lithium titanate as anode material for lithium ion batteries: Synthesis, post-treatment and its electrochemical response

S. CHAUQUE; F.Y. OLIVA; A. VISINTIN; D. BARRACO; E.P.M. LEIVA; O.R. CÁMARA

JOURNAL OF ELECTROANALYTICAL CHEMISTRY - (Print)

ELSEVIER SCIENCE SA

Lugar: Amsterdam; Año: 2017 vol. 799 p. 142 - 142

1572-6657

st-treatment conditions on the electric energy storage capacity is discussed. Li⁠4Ti⁠5O⁠12 was synthesized bysolid-state reaction at a high temperature and time (950 °C, 24 h) and the resulting material was post-treatedwith a ball milling process at different times. Additional samples were prepared with a post-calcination after andadding graphite carbon previously to the longer applied ball-milling time. All the obtained materials were structurallyand morphologically characterized by XRD and SEM techniques. To study the effect of ball milling time onthe lithium-ion storage capacity, electrochemical experiments of galvanostatic charge-discharge cycling, cyclicvoltammetry, and rate capability experiments were performed. The application of high-energy milling showedthat the obtained specific capacity increased with particle size reduction as long as the crystallinity degree ofthe LTO material remained high. The Li-ion diffusion coefficient for each material was obtained