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高等学校化学研究 ›› 2024, Vol. 40 ›› Issue (3): 508-512.doi: 10.1007/s40242-024-4046-0

• Articles • 上一篇    下一篇

Reasonable Designing of Free-standing MnO2/Graphene Composite Membrane for Lithium-ion Storage

SHI Junye1, YU Chenxi2,3, ZOU Zewei2,3, ZHENG Shumin2,3, ZHANG Xing4, WANG Bao2,3   

  1. 1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200433, P. R. China;
    2. State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China;
    3. Key Laboratory of Biopharmaceutical Preparation and Delivery, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China;
    4. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
  • 收稿日期:2024-02-27 出版日期:2024-06-01 发布日期:2024-06-01
  • 通讯作者: ZHENG Shumin,E-mail:smzheng@ipe.ac.cn;ZHANG Xing,E-mail:zhangxing@iccas.ac.cn;WANG Bao,E-mail:baowang@ipe.ac.cn E-mail:smzheng@ipe.ac.cn;zhangxing@iccas.ac.cn;baowang@ipe.ac.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (No. 51772296).

Reasonable Designing of Free-standing MnO2/Graphene Composite Membrane for Lithium-ion Storage

SHI Junye1, YU Chenxi2,3, ZOU Zewei2,3, ZHENG Shumin2,3, ZHANG Xing4, WANG Bao2,3   

  1. 1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200433, P. R. China;
    2. State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China;
    3. Key Laboratory of Biopharmaceutical Preparation and Delivery, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China;
    4. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
  • Received:2024-02-27 Online:2024-06-01 Published:2024-06-01
  • Contact: ZHENG Shumin,E-mail:smzheng@ipe.ac.cn;ZHANG Xing,E-mail:zhangxing@iccas.ac.cn;WANG Bao,E-mail:baowang@ipe.ac.cn E-mail:smzheng@ipe.ac.cn;zhangxing@iccas.ac.cn;baowang@ipe.ac.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No. 51772296).

摘要: Free-standing membranes show extraordinary promise in energy storage applications, however are usually limited by low capacity and poor rate capabilities. Herein, we assembled a series of free-standing MnO2/GO composite membranes with ZIF67 particles embedded between two-dimensional (2D) layers. The particle size of ZIF67 can be adjusted to achieve tunable interlayer spacing. The lithium storage performance of the as-obtained membranes with different interlayer spaces was systematically studied. The MnO2/GO composite membrane embedded with ZIF67 particles with an average diameter of 30 nm (denoted as MnO2/nZIF67/GO) delivers a good long cycling performance, and it retains a capacity of 340.7 mA·h·g-1 after 400 cycles at 0.05 A/g. The MnO2/GO composite membrane embedded with ZIF67 particles with an average diameter of 500 nm (denoted as MnO2/mZIF67/GO) exhibits good rate performance. Regardless of the size of the ZIF67 particles, the performance of the membrane containing ZIF67 is significantly better than that of the membrane without ZIF67, indicating that the ZIF67 particles can enhance the lithium storage performance of the assembled membranes. This work provides a method to fabricate a free-standing membrane for lithium storage with tunable electrochemical performance.

关键词: Lithium-ion battery, Membrane, Free-standing, ZIF67

Abstract: Free-standing membranes show extraordinary promise in energy storage applications, however are usually limited by low capacity and poor rate capabilities. Herein, we assembled a series of free-standing MnO2/GO composite membranes with ZIF67 particles embedded between two-dimensional (2D) layers. The particle size of ZIF67 can be adjusted to achieve tunable interlayer spacing. The lithium storage performance of the as-obtained membranes with different interlayer spaces was systematically studied. The MnO2/GO composite membrane embedded with ZIF67 particles with an average diameter of 30 nm (denoted as MnO2/nZIF67/GO) delivers a good long cycling performance, and it retains a capacity of 340.7 mA·h·g-1 after 400 cycles at 0.05 A/g. The MnO2/GO composite membrane embedded with ZIF67 particles with an average diameter of 500 nm (denoted as MnO2/mZIF67/GO) exhibits good rate performance. Regardless of the size of the ZIF67 particles, the performance of the membrane containing ZIF67 is significantly better than that of the membrane without ZIF67, indicating that the ZIF67 particles can enhance the lithium storage performance of the assembled membranes. This work provides a method to fabricate a free-standing membrane for lithium storage with tunable electrochemical performance.

Key words: Lithium-ion battery, Membrane, Free-standing, ZIF67