| Sn-SnSb/石墨复合材料的制备及电化学性能 |
| Synthesis and Electrochemical Performance of Sn-SnSb/Graphite Composite Materials |
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| 摘要: 以柠檬酸钠为配位剂、NaBH4为还原剂，将Sn(Ⅱ)和Sb(Ⅲ)盐在水溶液中共还原制得Sn-SnSb合金。X射线衍射和扫描电镜的测试结果表明：所得合金为多相合金，颗粒大小约200 nm。将该合金粉和石墨按质量比4∶1经机械球磨形成Sn-SnSb/石墨复合材料，将其作为锂离子电池阳极材料进行电化学性能测试，结果表明，该复合材料可逆容量超过600 mAh·g-1，具有良好的循环性能，15次循环内的稳定比容量为461 mAh·g-1，而纯Sn-SnSb合金粉15次循环后充电比容量为337 mAh·g-1。 |
| 关键词: Sn-SnSb/石墨 复合材料 阳极 锂离子电池 |
| 基金项目: |
| Abstract: Sn-SnSb alloy was synthesized by reducing an aqueous solution containing Sn(Ⅱ) and Sb(Ⅲ) salts with NaBH4 in the presence of sodium citrate as a complexant. The results of XRD and SEM show that Sn-SnSb alloy has a multiphase structure with particle size of about 200 nm. Sn-SnSb/Graphite composite materials were prepared by mechanical milling and the weight ratio of alloy and graphite was 4∶1. The electrochemical performance of Sn-SnSb/Graphite composite electrode was investigated. The results show that Sn-SnSb/Graphite composite materials has a better cycle performance with a stable capacity of 461 mAh·g-1 after 15 cycles and the reversible capacity exceeds 600 mAh·g-1, but the charge specific capacity of pure Sn-SnSb alloy is 337 mAh·g-1 after 15 cycles. |
| Keywords: Sn-SnSb/Graphite composite material anode lithium-ion battery |
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| 黄可龙,张戈,刘素琴,杨赛.Sn-SnSb/石墨复合材料的制备及电化学性能[J].无机化学学报,2006,22(11):2075-2079. |
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