广西师范大学学报（自然科学版） ›› 2012, Vol. 30 ›› Issue (3): 178-188.

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新颖三维超结构功能材料:SnO2@Carbon核-壳纳米链的合成与储能应用

方岳平1,2, 周训富1, 杨思源1, 王红强2   

  1. 1.华南农业大学生物材料研究所,广东广州510642;
    2.广西师范大学化学化工学院,广西桂林541004
  • 收稿日期:2012-05-23 出版日期:2012-09-20 发布日期:2018-12-04
  • 通讯作者: 方岳平(1966—),男,湖南岳阳人,华南农业大学教授,博士。E-mail:ypfang@scau.edu.cn
  • 作者简介:方岳平,男,1966年生,汉族,博士,教授,华南农业大学生物材料研究所所长。
  • 基金资助:
    国家自然科学基金资助项目(20963002,21173088,21105030,51064004)

Synthesis of Novel 3-D Superstructure of SnO2@Carbon Nanochains Functional Materials and Application

FANG Yue-ping1,2, ZHOU Xun-fu1, YANG Shi-yuan1, WANG Hong-qiang2   

  1. 1.Institute of Biomaterial,South China Agricultural University,Guangzhou Guangdong 510642,China;
    2.College of Chemistry and Chemical Engineering,Guangxi Normal University,Guilin Guangxi 541004,China
  • Received:2012-05-23 Online:2012-09-20 Published:2018-12-04

摘要： 首次以锡酸钠和葡萄糖为原料利用水热法成功合成了由碳包覆二氧化锡(SnO2@C)纳米链形成的多环三维(3-D)超结构材料。利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X-射线粉末衍射仪(XRD)和拉曼测试仪(Raman)对样品进行了表征。将8 nm厚的碳包覆二氧化锡纳米链(SCNCs)试样用于锂离子电池负极材料上,电流为300 mA·g-1时其可逆放电容量大于760 mAh·g-1,100次充放电后还能保持85%的容量。通过原位合成在SCNCs表面负载Pt、Ru纳米粒子,用于甲醇的氧化,具有优越的电化学催化活性。

关键词: 水热法, SnO2@C, 核壳纳米链, 电化学

Abstract: 3-D architectures based on SnO2@C nanochains assembled into multi-rings have been synthesized on a large scale using low-cost starting materials of stannate and glucose.The products were characterized by scanning electron microscopy (SEM),transmission electron microscopy (TEM),X-ray powder diffraction (XRD) and Raman tester (Raman).SCNCs with about 8 nm carbon shell synthesized by optimized routes were demonstrated for optimal electrochemical performances as anodes for lithium-ion batteries.More than 760 mAh·g-1 of reversible discharge capacity was achieved at a current density of 300 mA·g-1,and above 85% retention can be obtained after 100 charge-discharge cycles.PtRu nanoparticles were synthesized in situ on the carbon surface of SnO2@C nanochains.The as-prepared samples were applied to methanol oxidation,showing excellent electrochemical catalyticactivity.

Key words: hydrothermal method, SnO2@C, core-shell nanochain, electrochemical

中图分类号: 

  • O641
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