Preparation of porous carbon-coated SnO2 nanoplates and their improved lithium storage

Abstract

To overcome the problems SnO₂ anode faced, this work prepares porous carbon-coated SnO₂ nanoplates (SnO₂@C) on account of the advantages of ultrathin two-dimensional nanostructure and carbon coating on the surface, which is achieved through a simple and novel hydrothermal-assisted method. The novelty of this method is that preparing SnO₂ and introducing hole making SiO₂ template, which are generally achieved in steps, are successfully completed in a single hydrothermal process, thus showing relative simplicity. The results confirm that the SnO₂@C shows improved kinetics, stable structure and a LiF-rich SEI layer during cycling, thereby exhibiting outstanding lithium storage performance.