摘要
采用水热法、沉淀法制备了纳米Fe2O3-CuO复合氧化物粉末作为锂离子电池负极材料,用XRD和TEM对其结构和形貌进行了分析和表征,并用充放电和循环性能等对其电化学性能进行了测试。结果表明,采用水热法可以制备出粒度分布较均匀、颗粒形状为块状、平均粒径约30 nm的纳米Fe2O3-CuO复合氧化物;采用沉淀法可以制备出粒度分布较均匀、颗粒形状为球状、平均粒径约90 nm的纳米Fe2O3-CuO复合氧化物。沉淀法制备的纳米Fe2O3-CuO复合氧化物放电容量高于水热法制备的纳米Fe2O3-CuO复合氧化物。
The nanocomposite oxides（Fe2O3-CuO）as anode materials for lithium-ion batteries were synthesized via the hydrothermal method and the precipitation method.The crystalline structure and the electrochemical performance of the as-synthesized samples were investigated.The results show that the nano Fe2O3-CuO composite oxides obtained by the hydrothermal method are blocky,with narrow size distribution around 30 nm,while spherical,with narrow size distribution around 90 nm by the precipitation method.It is also found that the discharge capacity of the samples via the precipitation method is better than those of the samples obtained via the hydrothermal method.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2011年第2期191-195,共5页
Acta Materiae Compositae Sinica
基金
新疆维吾尔自治区高校科研计划重点项目(XJEDU2007I43)
关键词
水热法
沉淀法
复合氧化物
负极材料
电化学性能
hydrothermal method
precipitation method
composite oxides
anode materials
electrochemical properties
