高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (9): 2039.doi: 10.7503/cjcu20180051

• 物理化学 • 上一篇    下一篇

海藻酸钠引导合成纳微复合结构ZnFe2O4及其在锂离子电池中的应用

王秋娴1,3, 李凯1,3, 杨贝宁2, 岳红云1,2,3, 杨书廷1,2,3()   

  1. 1. 河南电池研究院有限公司, 新乡 453007
    2. 河南师范大学化学化工学院, 新乡 453007
    3. 动力电源及关键材料国家地方联合工程实验室, 新乡 453007
  • 收稿日期:2018-01-15 出版日期:2018-09-07 发布日期:2018-06-04
  • 作者简介:

    联系人简介: 杨书廷, 男, 博士, 教授, 主要从事锂离子电池关键材料及电池工艺技术和新型储能系统及关键材料研究. E-mail: shutingyang@foxmail.com

  • 基金资助:
    国家自然科学基金(批准号: U1504211)和河南省科技厅重点项目(批准号: 162102210070)资助.

Sodium Alginate Directed Synthesis of ZnFe2O4 with Micro-nano Structure and Its Performance in Lithium Ion Batteries

WANG Qiuxian1,3, LI Kai1,3, YANG Beining2, YUE Hongyun1,2,3, YANG Shuting1,2,3,*()   

  1. 1. Henan Battery Research Institute Co. Ltd., Xinxiang 453007, China
    2. School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
    3. National and Local Joint Engineering Laboratory of Motive Power and Key Materials, Xinxiang 453007, China
  • Received:2018-01-15 Online:2018-09-07 Published:2018-06-04
  • Contact: YANG Shuting E-mail:shutingyang@foxmail.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.U1504211) and the Key Scientific and Technological Project of Henan Province, China(No.162102210070).

摘要:

使用海藻酸钠作为结构导向剂, 通过溶剂热法原位合成了不同形貌的含碳ZnFe2O4锂离子电池负极材料. 利用扫描电子显微镜(SEM)、 透射电子显微镜(TEM)、 X射线衍射(XRD)和拉曼(Raman)光谱等对复合材料的形貌和结构进行表征, 通过恒电流充放电、 循环伏安曲线(CV)和交流阻抗谱(EIS)等对复合材料的电化学性能进行了测试. 结果表明, 在不同形貌的复合材料中, 具有类蒲公英状纳微复合结构的含碳ZnFe2O4的电化学性能最佳: 在1000 mA/g 的电流密度下循环100周后依然保持2100 mA·h/g 的比容量. 还探讨了海藻酸钠在材料形成和制作极片过程中的作用及其对电池性能的影响.

关键词: 海藻酸钠, 纳微复合结构, 负极材料, 锂离子电池

Abstract:

In the addition of Sodium alginate as a structure-directing agent, different micro-nano structures of anode materials ZnFe2O4/C were synthesized by the hydrothermal method. The structural and morphological properties were investigated by X-ray diffraction(XRD), field emission scanning electron microscopy(SEM), transmission electron microscopy(TEM) and Raman spectroscopy(Raman). The electrochemical performance was examined by galvanostatic charge-discharge test, cyclic voltammograms and electrochemical impedance spectroscopy. The results indicate that dandelion-liked ZnFe2O4/C has a reversible capacity of 2100 mA·h/g after 100 cycles at 1000 mA/g. In addition, the role of sodium alginate and the effect of different structures on electrical performance have also been investigated.

Key words: Sodium alginate, Micro-nano structure, Anode material, Lithium-ion battery

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