An elaborate strategy for fabricating one-dimensional quasi-hollow nanostructure of tin dioxide@carbon composite with improved lithium storage performance

Abstract

The current research priorities about tin dioxide-based anodes mainly focus on improvement of structure stability and rate performance due to the intrinsic issues of huge volume change and poor conductivity of tin dioxide materials. Herein, it is demonstrated that a one-dimensional quasi-hollow nanostructure of tin dioxide@carbon (SnO2@C) composite with improved electrochemical performance can be prepared by an elaborately simplified approach. It is worthy of noting that a proposed hydrothermal treatment plays an indispensable role in formation of this SnO2@C composite. As a promising anode for lithium-ion batteries, this as-prepared versatile nanostructure of SnO2@C composite combining advantages of one-dimension, hollow-confine and carbon coating able to exhibit high capacities of 749.3 and 549.8 mAh g−1 after 100 cycles respectively at 200 and even 1000 mA g−1, as well as superior rate properties. The well-designed versatile nanostructure should be responsible for thus outstanding performance.