石油化工高等学校学报 ›› 2025, Vol. 38 ›› Issue (6): 13-21.DOI: 10.12422/j.issn.1006-396X.2025.06.002

• 石油化工 • 上一篇    下一篇

Co3O4@ZnO//CC电极材料的制备及储锂性能研究

朱娅娅1(), 崔丽华1(), 杨克锋2, 伍金柔1, 王肖玲1, 王洋超1, 余伟1   

  1. 1.北方民族大学 材料科学与工程学院,宁夏 银川 750021
    2.郑州大学 物理学院,河南 郑州 450052
  • 收稿日期:2025-09-25 修回日期:2025-10-28 出版日期:2025-12-25 发布日期:2025-12-07
  • 通讯作者: 崔丽华
  • 作者简介:朱娅娅(2002⁃),女,从事锂离子电池负极材料方面的研究;E⁃mail:1755608498@qq.com
  • 基金资助:
    国家级大学生创新创业训练计划项目(202411407003);宁夏自然科学基金项目(2023AAC03291)

Study on Preparation of Co₃O₄@ZnO//CC Electrode and Lithium Storage Performance

Yaya ZHU1(), Lihua CUI1(), Kefeng YANG2, Jinrou WU1, Xiaoling WANG1, Yangchao WANG1, Wei YU1   

  1. 1.School of Materials Science and Engineering,North Minzu University,Yinchuan Ningxia 750021,China
    2.School of Physics,Zhengzhou University,Zhengzhou Henan 450052,China
  • Received:2025-09-25 Revised:2025-10-28 Published:2025-12-25 Online:2025-12-07
  • Contact: Lihua CUI

摘要:

为解决商用石墨负极材料理论比容量低、快充性能差及安全性不足的问题,构建一种新型自支撑复合电极,实现了锂离子电池综合电化学性能的提升。以碳布(CC)为柔性基底,采用水热法在其表面原位生长Co3O4/ZnO异质结结构,随后进行热处理,成功制备了自支撑Co3O4@ZnO//CC负极材料;利用XRD、SEM、TEM、XPS等表征手段分析了其微观结构与组成,并通过电化学测试系统评估了其储锂性能。结果表明,Co3O4@ZnO三维多孔纳米片阵列可缓解体积变化并促进电子传输;在2.00 mA/cm2的电流密度下,Co3O4@ZnO//CC电极的首圈放电比容量与充电比容量分别为3.96、3.28 mA·h/cm2,首圈库仑效率达82.83%,循环100圈后容量保持率为56.40%,其循环稳定性和倍率性能均优于Co3O4//CC和ZnO//CC电极。

关键词: 双金属氧化物, 异质结结构, 电极材料, 自支撑电极, 锂离子电池

Abstract:

To address the issues of low theoretical specific capacity, poor fast?charging performance, and insufficient safety in commercial graphite anode materials, a new type of self?supporting composite electrode was constructed, which achieved an improvement in the comprehensive electrochemical performance of lithium?ion batteries. Using carbon cloth (CC) as a flexible substrate, a Co3O4/ZnO heterojunction structure was grown in situ on its surface via the hydrothermal method, followed by heat treatment, successfully preparing a self?supporting Co3O4@ZnO//CC anode material. Microstructural and compositional analyses were conducted using characterization techniques such as XRD, SEM, TEM, and XPS, while electrochemical tests were employed to evaluate its lithium storage performance. Results demonstrated that the three?dimensional porous nanosheet array of Co3O4@ZnO effectively mitigates volume changes and facilitates electron transport. The Co3O4@ZnO//CC electrode exhibited an initial discharge and charge specific capacity of 3.96 and 3.28 mA?h/cm2 at 2.00 mA/cm2 current density, respectively, with a coulombic efficiency of 82.83% in the first cycle and a capacity retention rate of 56.40% after 100 cycles. Both its cycling stability and rate performance outperformed those of Co3O4//CC and ZnO//CC electrodes.

Key words: Bimetallic oxides, Heterojunction structure, Electrode materials, Self?supporting electrode, Lithium?ion batteries

中图分类号: 

引用本文

朱娅娅, 崔丽华, 杨克锋, 伍金柔, 王肖玲, 王洋超, 余伟. Co3O4@ZnO//CC电极材料的制备及储锂性能研究[J]. 石油化工高等学校学报, 2025, 38(6): 13-21.

Yaya ZHU, Lihua CUI, Kefeng YANG, Jinrou WU, Xiaoling WANG, Yangchao WANG, Wei YU. Study on Preparation of Co₃O₄@ZnO//CC Electrode and Lithium Storage Performance[J]. Journal of Petrochemical Universities, 2025, 38(6): 13-21.

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