Preparation of SnO2@TiO2/Graphene by micro-arc oxidation as an anode material for lithium ion batteries

To improve the performance of lithium-ion batteries, a facile micro-arc oxidation process to synthesize SnO2 is developed with graphene used as a conductive additive. The integration of the current collector and the active substance is realized by the simplified method. As a result, the designed material exhibits an outstanding energy capacity up to 482 mAh/g at current density of 1.0 C after 200 cycles and a good rate performance of 746 mAh/g at current density of 0.2 C. This work provides a starting point for preparation of other metal oxides by micro-arc oxidation for lithium storage applications.

Automated summary

A facile micro-arc oxidation process combined with graphene as a conductive additive was developed to synthesize SnO2 for improved lithium-ion battery performance. The integration of the current collector and the active substance was achieved using a simplified method. The designed material exhibited excellent energy capacity of 482 mAh/g at a current density of 1.0 C after 200 cycles and a good rate performance of 746 mAh/g at a current density of 0.2 C. This work serves as a starting point for the preparation of other metal oxides using micro-arc oxidation for lithium storage applications.