| 纳米SnO的溶胶-凝胶法制备与电化学性能 |
| Preparation and Electrochemical Properties of Nano-SnO by Sol-Gel Technique |
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| 摘要: 以氯化亚锡、草酸和无水乙醇为原料，采用溶胶-凝胶法制备了纳米SnO粉末，并用热重-差热分析、X-射线衍射分析、透射电镜和扫描电镜等多种电化学方法对其进行了表征。结果表明，采用溶胶-凝胶法可以制备出粒度分布较集中，平均粒径在20 nm左右的纳米SnO粉末。该纳米SnO的可逆容量达到607 mAh·g-1，经80次循环后平均每次循环的容量损失只有0.056%，说明纳米SnO是一种优秀的高容量锂离子电池负极材料。 |
| 关键词: 氧化亚锡 纳米材料 溶胶-凝胶法 锂离子电池 负极 |
| 基金项目: |
| Abstract: Nano-SnO powders were prepared by sol-gel technique using tin dichloride, oxalic acid and dehydrated alcohol as raw materials, and characterized by thermogravimertric (TG) analysis and differential thermal analysis (DTA), X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscopy (SEM) in combination with various electrochemical methods. Results show that nano-SnO powders with narrow size distribution around 20 nm could be obtained by calcinating the precursor at 500 ℃ for 6 h. Nano-SnO delivers a reversible capacity of 607 mAh·g-1 and the capacity loss per cycle is about 0.056% after being cycled 80 times, which indicates that nano-SnO powders are good anode materials with high capacity for Li ion battery applications. |
| Keywords: SnO nanometer material sol-gel technique lithium ion battery anode |
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| 何则强,熊利芝,肖卓炳,麻明友,吴显明,黄可龙.纳米SnO的溶胶-凝胶法制备与电化学性能[J].无机化学学报,2006,22(2):253-257. |
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