能源化学(英文版)

能源化学(英文) ›› 2015, Vol. 21 ›› Issue (4): 529-533.

• ARTICLES • 上一篇    

SnO2/corncob-derived activated carbon nanohybrid as an anode material for lithium-ion batteries

Xiangyang Zhoua,b, Zhen Gengb,c, Cunman Zhanga,b, Jue Wanga,b, Dabin Wanga,b   

  1. a School of Automotive Studies, Tongji University, Shanghai 201804, China;
    b Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China;
    c School of Materials Science and Technology, Tongji University, Shanghai 201804, China
  • 收稿日期:2015-05-17 修回日期:2015-06-24 发布日期:2015-08-21
  • 通讯作者: Cunman Zhang
  • 基金资助:

    This work was supported by the National High Technology Research and Development Program of China (863 Program) (2012AA053305).

SnO2/corncob-derived activated carbon nanohybrid as an anode material for lithium-ion batteries

Xiangyang Zhoua,b, Zhen Gengb,c, Cunman Zhanga,b, Jue Wanga,b, Dabin Wanga,b   

  1. a School of Automotive Studies, Tongji University, Shanghai 201804, China;
    b Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China;
    c School of Materials Science and Technology, Tongji University, Shanghai 201804, China
  • Received:2015-05-17 Revised:2015-06-24 Published:2015-08-21
  • Contact: Cunman Zhang
  • Supported by:

    This work was supported by the National High Technology Research and Development Program of China (863 Program) (2012AA053305).

摘要： A facile synthesis of SnO2/corncob-derived activated carbon (CAC) composite was proposed, and the CAC used here has high specific surface area (over 3000 m2/g) and ample oxygen-containing functional groups. The microstructures and morphology as well as electrochemical performance of the SnO2/CAC composites were investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and relevant electrochemical characterization. The results show that the mass ratios of SnO2 to CAC have a significant effect on the structures and properties of the composites. The sample with 34% SnO2 delivered a capacity of 879.8 mAh/g in the first reversible cycle and maintained at 634.0 mAh/g (72.1% retention of the initial reversible capacity) after 100 cycles at a current density of 200 mA/g. After 60 cycles at different specific currents from 200 to 2000 mA/g, the reversible specific capacity was still maintained at 632.8 mAh/g at a current density of 200 mA/g. These results indicate that SnO2/CAC can be a desirable alternative anode material for lithium ion batteries.

关键词: Tin oxide, Activated carbon, Corncob, Anode, Li-ion batteries

Abstract: A facile synthesis of SnO2/corncob-derived activated carbon (CAC) composite was proposed, and the CAC used here has high specific surface area (over 3000 m2/g) and ample oxygen-containing functional groups. The microstructures and morphology as well as electrochemical performance of the SnO2/CAC composites were investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and relevant electrochemical characterization. The results show that the mass ratios of SnO2 to CAC have a significant effect on the structures and properties of the composites. The sample with 34% SnO2 delivered a capacity of 879.8 mAh/g in the first reversible cycle and maintained at 634.0 mAh/g (72.1% retention of the initial reversible capacity) after 100 cycles at a current density of 200 mA/g. After 60 cycles at different specific currents from 200 to 2000 mA/g, the reversible specific capacity was still maintained at 632.8 mAh/g at a current density of 200 mA/g. These results indicate that SnO2/CAC can be a desirable alternative anode material for lithium ion batteries.

Key words: Tin oxide, Activated carbon, Corncob, Anode, Li-ion batteries