【摘要】 采用共沉淀法制备了SnSbO2.5和SnGeO3两种锡基复合氧化物粉末.XRD分析表明,这两种锡基复合氧化物的共同特点是在27°～28°处有波峰,属无定型结构.将其分别作为锂离子电池负极材料的活性物质,利用恒电流电池测试仪研究它们的电化学性能.实验表明,这两种锡基复合氧化物都有较高的电化学容量,SnSbO2.5的可逆容量为1200mA·h/g,SnGeO3的可逆容量为750mA·h/g.这两种锡基复合氧化物的电化学容量远高于碳材料(石墨的理论容量为372mA·h/g),因此,这两种锡基复合氧化物可以作为锂离子电池负极材料的候选材料.更多还原

【Abstract】 The two tin-compounded oxide powders, SnSbO_2.5 and SnGeO₃, were prepared by co-precipitation. It is testified by XRD analysis that the two tin-compounded oxides have wave crest between 27°～28° in character belonging to amorphous structure. They were used as anode materials for lithium ion batteries respectively, and their electrochemical properties were studied using constant electric current cell tester. Proved by experiments, the two tin-compounded oxides have high electrochemical capacities, the reversible capacities of SnSbO_2.5 are about 1　200　mA·h/g and the reversible capacities of SnGeO₃ are about 750　mA·h/g. They are far more than carbon materials. Therefore, the two tin-compounded oxides can be considered as a candidater for the anode materials of lithium ion batteries.更多还原