高等学校化学学报 ›› 2023, Vol. 44 ›› Issue (1): 20220453.doi: 10.7503/cjcu20220453

• 研究论文 • 上一篇    下一篇

中空多壳层CoFe2O4的制备及锂离子电池性能研究

毕如一1,2, 赵吉路2, 王江艳2,3(), 于然波1(), 王丹2,3()   

  1. 1.北京科技大学冶金与生态工程学院物理化学系, 北京 100083
    2.中国科学院过程工程研究所生化工程国家重点实验室, 北京 100190
    3.中国科学院大学化学工程学院, 北京 100049
  • 收稿日期:2022-06-29 出版日期:2023-01-10 发布日期:2022-07-28
  • 通讯作者: 王江艳,于然波,王丹 E-mail:jywang@ipe.ac.cn;ranboyu@ustb.edu.cn;danwang@ipe.ac.cn
  • 作者简介:第一联系人:共同第一作者.
  • 基金资助:
    国家自然科学基金(21820102002);中国科学院洁净能源创新研究院合作基金(DNL202020);国家重点研发计划项目(2021YFC2902500)

Synthesis and Lithium-ion Battery Performance of Hollow Multishelled CoFe2O4

BI Ruyi1,2, ZHAO Jilu2, WANG Jiangyan2,3(), YU Ranbo1(), WANG Dan2,3()   

  1. 1.Department of Physical Chemistry,School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China
    2.State Key Laboratory of Biochemical Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China
    3.School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2022-06-29 Online:2023-01-10 Published:2022-07-28
  • Contact: WANG Jiangyan, YU Ranbo, WANG Dan E-mail:jywang@ipe.ac.cn;ranboyu@ustb.edu.cn;danwang@ipe.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(21820102002);the Cooperation Fund of the Institute of Clean Energy Innovation, Chinese Academy of Sciences(DNL202020);the National Key R&D Program of China(2021YFC2902500)

摘要:

以二元金属氧化物CoFe2O4为研究对象, 通过次序模板法制备了CoFe2O4中空多壳层结构(HoMS)材料; 对其形貌、 结构进行了表征; 考察了壳层结构与电化学性能之间的关系. 电化学测试结果表明, 双壳层-核CoFe2O4中空球具有最高的放电比容量(1354.4 mA·h/g)、 优异的倍率性能和循环稳定性, 其独特的结构优势和最优的空腔体积占有率使其在多次循环过程中能始终保持结构和电化学性质的稳定.

关键词: 中空多壳层结构, CoFe2O4, 锂离子电池, 比容量, 循环稳定性

Abstract:

Binary transition metal oxides have attracted significant attention as high-performance lithium ion battery electrode materials, due to their excellent electrochemical activities. However, the poor cycling stability of the material limits its practical application. In this study, we synthesized CoFe2O4 hollow multishelled structure(HoMS) material by sequential templating approach, and characterized its morphology and structure. In addition, the relationship between shell structure and battery performance is well studied. It is demonstrated that double-shelled core CoFe2O4 HoMS has the highest discharge capacity(1354.4 mA·h/g), excellent rate performance and cycle stability. The outstanding electrochemical performance is mainly attributed to its unique structural advantages and optimal cavity volume occupancy, which enables it to maintain good structure stability and beneficial electrochemical properties during the repeated cycling.

Key words: Hollow multishelled structure, CoFe2O4, Lithium-ion battery, Specific capacity, Cycling stability

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