Facile synthesis and electrochemical properties of porous SnO2 micro-tubes as anode material for lithium-ion battery

Porous SnO2 micro-tubes were synthesized by the thermal decomposition of SnC2O4 precursor. The morphology of SnC2O4 could be preserved after the controlled heat treatment and a lot of mesopores left due to the release of gases. The mesoporous nature with a range of 3-50 nm was characterized by BET method. SEM images showed that the obtained SnO2 samples were rhombic tube-like with swallow-tailed nozzles. When the porous SnO2 micro-tubes were used as anode materials for lithium-ion battery, they exhibited high lithium storage capacity and coulomb efficiency. In addition, CV results demonstrated that the formation of Li2O at high voltage was partially reversible reactions. (C) 2010 Elsevier B.V. All rights reserved.