Synthesis of Tin Oxide Nanoparticle Film by Cathodic Electrodeposition

Abstract

Three-dimensional SnO 2 nanoparticle films were deposited onto a copper substrate by cathodic electrodeposition in a nitric acid solution. A new formation mechanism for SnO 2 films is proposed based on the oxidation of Sn2+ ion to Sn4+ ion by NO+ ion and the hydrolysis of Sn4+. The particle size of SnO 2 was controlled by deposition potential. The SnO 2 showed excellent charge capacity (729 mAh/g) at a 0.2 C rate and high rate capability (460 mAh/g) at a 5 C rate. Copyright © 2012 American Scientific Publishers.