Preparation of Zn 2 SnO 4 /SnO 2 @Mn 2 O 3 Microbox Composite Materials with Enhanced Lithium‐Storage Properties

In this work, the composite materials of Zn 2 SnO 4 /SnO 2 @Mn 2 O 3 microboxes have been synthesized after the calcination of precursor Zn 2 SnO 4 /SnO 2 @MnCO 3 , which is prepared by using a simple hydrothermal process. Preliminary results of the electrochemical performances of Zn 2 SnO 4 /SnO 2 @Mn 2 O 3 microboxes, Zn 2 SnO 4 /SnO 2 microboxes, and Mn 2 O 3 nanoparticles have been also reported. On the one hand, the robust ZTO/SnO 2 hollow microboxes can not only buffer the volume variation, but also efficiently prevent the aggregation of Mn 2 O 3 nanoparticles. On the other hand, Mn 2 O 3 nanoparticles provide more active sites, owing to the nanostructures of Mn 2 O 3 , as well as consolidate the hollow cubic structure during the lithium insertion/extraction process. In virtue of the synergistic effects of Zn 2 SnO 4 /SnO 2 and Mn 2 O 3 , the Zn 2 SnO 4 /SnO 2 @Mn 2 O 3 microboxes exhibit a higher initial discharge capacity (1505.3 mAhg −1 ) as well as a better cycling performance (597.2 mAhg −1 after 100 cycles) and rate capacity compared to Zn 2 SnO 4 /SnO 2 and Mn 2 O 3 .