SnS/SnO heterostructures embedded in porous carbon microcages by boosting charge transfer for enhanced sodium-ion storage

Currently, tin based materials are widely explored as anode materials for sodium ion batteries due to their high theoretical capacity and large reserves. However, the practical applications of these materials are always hindered by their poor conductivity, slow sodium ion diffusion rate as well as complicated preparation process. Given this, a distinctive hybrid composite consisting of SnS/SnO heterostructures embedded inside multidimensional porous carbon microcages have been successfully synthesized through a facile one-pot method. Benefiting from the fascinating properties at SnS/SnO heterointerfaces, the optimized hybrid electrode yields a remarkable capacity of 274.7 mAh g(-1) at 0.5 A g(-1) and a good cycling stability with 70.1% capacity retention after 200 cycles. This method can provide inspiration in further innovation of other high-performance SIBs electrodes and create more possibilities for the implementation of large-scale production.