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电化学(中英文) ›› 2014, Vol. 20 ›› Issue (4): 360-364.  doi: 10.13208/j.electrochem.130402

• 电化学近期研究专辑(厦门大学 姜艳霞教授主编) • 上一篇    下一篇

球形Sn-SnSb合金纳米粒子制备及其储锂性能

肖尧1,吴娇红2,王琪1,黄令1*,李君涛2,孙世刚1   

  1. 1. 厦门大学化学化工学院化学系,福建 厦门 361005;2. 厦门大学能源研究院,福建 厦门 361005
  • 收稿日期:2013-04-02 修回日期:2013-06-21 出版日期:2014-08-28 发布日期:2013-06-26
  • 通讯作者: 黄令 E-mail:huangl@xmu.edu.cn
  • 基金资助:

    国家自然科学基金项目(No. 21273184)、科技部863计划项目(No. 2011AA11A254)和国家重点基础研究发展计划项目(No. 2009CB220102)项目资助

Preparation and Lithium Storage Performance of Sn-SnSb Nanoparticles

XIAO Yao1, WU Jiao-hong2, WANG Qi1, HUANG Ling1*, LI Jun-tao2, SUN Shi-gang1   

  1. 1. Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005; 2. School of Energy Research, Xiamen University, Xiamen 361005
  • Received:2013-04-02 Revised:2013-06-21 Published:2014-08-28 Online:2013-06-26
  • Contact: HUANG Ling E-mail:huangl@xmu.edu.cn

摘要: 锂离子电池Sn负极材料有较高的比容量,但其容量随周期循环急剧衰减. 若Sn与Sb形成SnSb合金可以改善其循环性能. 本文采用有机液相还原方法制备了球形Sn-SnSb合金纳米粒子,其首周期循环充电容量1235.9 mAh·g-1,放电容量为785.9 mAh·g-1,经过50周的循环之后其放电容量保持在409.2 mAh·g-1,表现出较好的循环性能.

关键词: 球形Sn-SnSb纳米粒子, 锂离子电池, 负极

Abstract: Tin was widely studied as alternative anode material to carbon for lithium-ion batteries thanks to its much higher theoretical capacity. However, a pure tin electrode suffers severely from its poor cycleability due to mechanical fatigue caused by volume change during lithium insertion and extraction processes. Tin-based alloy may improve the cycleability property of tin electrode. In this article, we report facile synthesis of spherical Sn-SnSb nanopartciles using a simple solvent-thermal approach. It is amazing to find that the spherical Sn-SnSb nanoparticles can circumvent volume changes effectively during charge-discharge process. Electrochemical discharge/charge results show that the spherical Sn-SnSb nanoparticles electrode exhibits much better cycleability than pure Sn electrode, with first charge capacity and discharge capacity of 1235.9 and 785.9 mAh·g-1, respectively. After 50th cycling, the discharge capacity is 409.2 mAh·g-1.

Key words: spherical SnSb nanoparticles, lithium ion batteries, negative electrode

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