Synthesis of SnO2/MoS2 composites with different component ratios and their applications as lithium ion battery anodes†
Abstract
Owing to their high capacities and ease of synthesis with desired morphologies, two anode materials with great potential, namely SnO2 and MoS2, are selected to form a composite anode, where SnO2 nanoparticles act as spacers to prevent the restacking of MoS2 nanosheets, while MoS2 nanosheets serve as substrates to accommodate the SnO2 nanoparticles. However, the ratio between the two components has a crucial effect on the resultant electrochemical performance. In this work, four sets of composites with different SnO2/MoS2 ratios (SnO2/MoS2-1, SnO2/MoS2-2, SnO2/MoS2-3, and SnO2/MoS2-4) have been synthesized, characterized, and electrochemically tested. Among them, the composite of SnO2/MoS2-3 with an SnO2 : MoS2 mass ratio of around 2 : 1 outperforms the pure MoS2 nanosheets and any other composite, delivering the highest and most stable reversible capacities over a test period of 230 cycles with a current density ranging from 100 to 10 000 mA g−1.
Please wait while we load your content...
