Synthesis and electrochemical properties of SnO₂-polyaniline composite

Abstract

The SnO₂-polyaniline(SnO₂-PAn) composite was prepared by microemulsion polymerization method using aniline, ammonium peroxodisulfate and SnO₂ as starting materials. The SnO₂-PAn composite was characterized by X-ray diffractometer, scanning electron microscope and electrochemical techniques. The results show that PAn in the composites is amorphous. PAn formed in the reaction is deposited preferentially on the SnO₂ particles, giving a SnO₂-PAn composite, in which SnO₂ is coated with PAn. SnO₂-PAn composite shows a reversible capacity of 657.6 mA·h/g and the capacity loss per cycle is only 0.092% after 80 cycles, suggesting that SnO₂-PAn composite is a promising anode material for lithium ion batteries.

Keywords

lithium ion battery / synthesis / electrochemical properties / microemulsion polymerization method / SnO₂ / polyaniline