Preparation, characterization, and electrochemical performance of Li2CuSnO4 and Li2CuSnSiO6 electrodes for lithium batteries

Authors

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

RIS ID

35108

Publication Details

Shenouda, AY & Liu, HK, (2010), Preparation, characterization, and electrochemical performance of Li2CuSnO4 and Li2CuSnSiO6 electrodes for lithium batteries, Journal of Electrochemical Society, 157(11), pp. A1183-A1187.

Abstract

Lithium copper tin silicon oxide was prepared from their precursor compounds using Brij surfactant and different sources of Si such as SiO₂, SiC, and Si₃N₄. A hydrothermal autoclave method was used in the first stage of the preparation. X-ray diffraction characterization revealed that the crystal structures of these compounds were tetragonal. Scanning electron microscope investigation showed that the particle size morphology of Li₂CuSnSiO₆ is larger than that of Li₂CuSnO₄. Electrochemical impedance spectroscopy explained that the cell prepared from the Li₂CuSnSiO₆ electrode using Si₃N₄precursor had a lower charge-transfer resistance (38 Ω) than that of Li₂CuSnO₄ (R_ct = 2936 Ω). 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.