A cobalt-iron layered double hydroxide electrode and a preparation method and application thereof
By preparing cobalt-iron layered double hydroxide electrodes through electrochemical methods, the performance deficiencies of cathode materials in aqueous zinc-ion batteries were solved, achieving high-capacity and low-cost electrochemical performance enhancement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-01
- Publication Date
- 2026-07-17
AI Technical Summary
Existing aqueous zinc-ion battery cathode materials suffer from problems such as low discharge voltage, poor cycle stability, narrow electrochemical window, and insufficient energy density. Furthermore, the high cost and limited reserves of Co and Ni restrict their large-scale application.
Graphene sheets were prepared by electrochemical exfoliation using a three-electrode system, and cobalt-iron layered double hydroxide electrodes were prepared by electrochemical deposition and activation methods. The Fe/Co ratio in the deposition solution was controlled to form CoFe-LDH(v) to optimize the microstructure, hydrogen vacancy distribution and electronic structure of the material.
This improved the material's ion adsorption capacity, charge transfer kinetics, and structural stability, achieving electrochemical performance with high specific capacity and long cycle life while reducing material costs.
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