Synthesis and electrochemical studies on Li2CuSnO4 and Li2CuSnSiO6 as negative electrode in lithium batteries

Authors

Atef Y. Shenouda, Central Metallurgical Research and Development InstituteFollow
Hua-Kun Liu, University of WollongongFollow

RIS ID

36432

Publication Details

Shenouda, AY & Liu, HK (2010), Synthesis and electrochemical studies on Li₂CuSnO₄ and Li₂CuSnSiO₆ as negative electrode in lithium batteries, Rechargeable Lithium and Lithium-Ion Batteries - 216th ECS Meeting, pp. 75-89, Pennington, NJ, USA: The Electrochemical Society.

Abstract

Li₂CuSnO₄ and Li₂CuSnSiO₆ were prepared from their precursors compounds using Brij surfactant and a hydrothermal autoclave method. X-ray diffraction characterization revealed that the crystal structures of these compounds were tetragonal. Scanning electron microscope investigation showed the particle size morphology of Li₂CuSnSiO₆ is larger than that of Li₂CuSnO₄. Electrochemical impedance spectroscopy (EIS) explained that Li₂CuSnO₄ cell had higher charge transfer resistance (R_ct = 2936Ω) than that of Li₂CuSnSiO₆ (38Ω). Furthermore, the reversible specific discharge capacity of the Li₂CuSnSiO₆ cell was 870 mAh/g in comparison with 780 mAh/g for the Li₂CuSnO₄ cell after 100 cycles.