一种双金属ZIF衍生三维多孔ZnO / Co3O4@CNTs复合材料及制备方法与应用
By preparing ZnO/Co3O4@CNTs composite materials, the problems of insufficient conductivity and specific capacity of ZIFs-derived materials in lithium-ion batteries were solved, achieving a comprehensive improvement in high conductivity and high specific capacity, as well as excellent cycle stability and electrochemical performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTH CHINA UNIV OF TECH
- Filing Date
- 2024-06-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing ZIFs-derived materials suffer from poor conductivity and low theoretical specific capacity in lithium-ion batteries, making it difficult to simultaneously achieve a combination of high conductivity and high specific capacity.
Using Zn/Co-ZIF as a precursor, a three-dimensional porous ZnO/Co3O4@CNTs composite material was prepared by a pyrolysis method of reduction followed by oxidation. The external CNTs provide a conductive pathway, the internal dual transition metal oxides improve the specific capacity, and the loose porous structure optimizes the lithium-ion transport path.
It achieves a combination of high conductivity and high specific capacity in lithium-ion batteries, with significantly improved cycle stability and electrochemical performance. The discharge capacity reaches 1156 mAh·g⁻¹ at a current density of 200 mA·g⁻¹, and the discharge capacity remains excellent under changes in current density.
Smart Images
Figure CN118619251B_ABST