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›› 2015, Vol. 15 ›› Issue (1): 169-173.

• 材料工程专栏 • 上一篇    下一篇

中空ZnFe2O4微球的合成及其电化学性能

王亚蕾 张立新   

  1. 工行山西省太原市兴华街支行6222020502003446676 中北大学化工与环境学院
  • 收稿日期:2014-11-17 修回日期:2014-12-18 出版日期:2015-03-13 发布日期:2015-03-13
  • 通讯作者: 张立新

Synthesis and Electrochemical Performance of Hollow ZnFe2O4 Microspheres

WANG Ya-lei ZHANG Li-xin   

  1. College of Science, North university of China College of Science, North university of China
  • Received:2014-11-17 Revised:2014-12-18 Online:2015-03-13 Published:2015-03-13
  • Contact: ZHANG Li-xin

摘要: 以Zn(Ac)2×4H2O和FeCl3×6H2O为主要原料,采用一步水热法合成了中空结构的ZnFe2O4微球,对其物相、形貌和组成进行了分析. 结果表明,中空ZnFe2O4粒径微球约300 nm,壳厚约25 nm. 以其为锂离子电池负极材料,100 mA/g电流密度下,首次放电容量为1524 mA×h/g, 50次充放电循环后容量约为826 mA×h/g,呈现出优异的循环性能.

关键词: 水热法, ZnFe2O4, 中空结构, 锂离子电池, 负极材料

Abstract: Hollow ZnFe2O4 microspheres were fabricated by one-step hydrothermal method with Zn(Ac)2×4H2O and FeCl3×6H2O as raw materials, and their crystalline phase, morphology and composition characterized. The results showed that the diameter of hollow ZnFe2O4 microspheres was about 300 nm with the shell thickness of 25 nm. When the composite was used as a cathode material for lithium ion batteries, the results displayed that the ZnFe2O4 sample exhibited the first discharge capacity of 1524 mA×h/g at a high current density of 100 mA/g, remained at 826 mA×h/g after 50 cycles and tended to be stable, reflecting excellent cycling performance.

Key words: hydrothermal metho, ZnFe2O4, hollow structure, lithium ion battery, cathode material

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