纳米Fe<sub>2</sub>O<sub>3</sub>-CuO 复合氧化物的制备与电化学性能

刘斌; 宋彬; 胡文胜; 贾殿赠

纳米Fe₂O₃-CuO 复合氧化物的制备与电化学性能

1.
新疆大学应用化学研究所, 乌鲁木齐 830046;
2.
新疆教育学院理学分院, 乌鲁木齐 830043

基金项目: 新疆维吾尔自治区高校科研计划重点项目(XJEDU2007I43)

详细信息

中图分类号: TB332; O612
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出版历程
- 收稿日期: 2010-03-29
- 修回日期: 2010-08-30
- 刊出日期: 2011-04-14

Preparation and electrochemical properties of nano Fe₂O₃-CuO composite oxides

1.
Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, China;
2.
School of Science, Xinjiang Education Institute, Urumqi 830043,China

摘要

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。
- 水热法 /
- 沉淀法 /
- 复合氧化物 /
- 负极材料 /
- 电化学性能
Abstract: 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.
- hydrothermal method /
- precipitation method /
- composite oxides /
- anode materials /
- electrochemical