无定形碳/二氧化锡复合纳米球锂离子电池负极性能研究

In this paper, amorphous carbon/SnO2 hybrid nanospheres have been synthesized by a two-step hydrothermal process. As the anode material of lithium ion battery, C/SnO2 hybrid nanospheres exhibit higher reversible capacity and better cycling performance than pure SnO2 nanoshperes. After 20th cycle, the reversible capacity of C/SnO2 hybrid nanospheres maintains at 743.6 mAh/g at C/5 rate. The enhanced performance can be attributed to good conductivity of amorphous carbon and the suppression effect for SnO2 nanospheres during charge/discharge processes. The present results indicate that amorphours carbon/SnO2 hybrid nanospheres have potential applications in the anode of lithium ion battery.