Affiliation:
1. The Collaborative Innovation Center of Chemical Science and Engineering Department of Chemistry School of Science Tianjin University Tianjin 300072 China
2. Tianjin B&M Science and Technology Co., Ltd. Tianjin 300384 China
3. Institute of Materials Research and Engineering Agency for Science, Technology and Research (A*STAR) 2 Fusionopolis Way #08‐03 Innovis 138634 Singapore Singapore
Abstract
Sn‐based composites are promising anode materials for Li‐ion batteries (LIBs) due to its high theoretical specific capacity. However, the large volume expansion during lithiation, poor conductivity and poor stability limit their practical applications as anodes of LIBs. Herein, (SnO2/MoS2)@C composites with 0D/1D/2D multidimensional microstructures are successfully prepared via successive two‐step hydrothermal reactions with a subsequent multi‐coating modification and pyrolysis. Due to the structural integrity, interconnected conductive paths, and synergistic effect between the MoS2 nanosheets and SnO2 nanoparticles, the (SnO2/MoS2)@C composite shows excellent electrochemical performance as anode for LIBs. The composite is able to deliver high reversible capacities of 953.4, 797.9, 758.3, 711.9, and 658.6 mAh g−1 at current densities of 0.1, 0.2, 0.5, 1, and 2 A g−1, respectively. Furthermore, it also demonstrates good cyclic performance at 0.2 A g−1.