Electrochemical characteristics of Tin-based anode material for Li-ion secondary batteries

Abstract

Recently tin-based composite oxide materials have received considerable attention as a negative electrode for lithium ion secondary batteries. In this study, nano-sized SnO(2)-B(2)O(3)-P(2)O(5) particles were synthesized by an Aerosol Flame Deposition(AED) technique. Single or multi-component amorphous oxide nano particles (soot) were synthesized by supplying metal halide sources such as chloride in the form of gas into an oxy-hydrogen flame. The fine powder obtained was a mixture of crystalline tin oxide and an amorphous phase of B(2)O(3) and P(2)O(5), resulting in a highly dispersed structure with nano-scale interfaces. According to the XRD results, the as-prepared materials seemed to have a semi-amorphous structure and SEM images showed that the average particle size < 60 nm. In this study, we investigated the relationship between the structural modification of the tin-based composite oxide and the conductivity as a function of the composition.