一种高活性仿生酶催化剂及其制备方法
By anchoring nano-metal particles in carbon nanotubes to prepare carbon-free biomimetic nanozyme catalysts, the problems of high overpotential and low capacity in lithium-oxygen batteries have been solved, achieving low reaction overpotential, large specific capacity and good cycle stability, thus promoting the advancement of novel energy storage technologies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING INST OF TECH
- Filing Date
- 2022-08-30
- Publication Date
- 2026-07-17
AI Technical Summary
The high overpotential and low actual capacity of existing lithium-oxygen batteries limit their application in long-range, high-safety pure electric vehicles. Traditional carbon catalysts cause large charging overpotentials and poor cycle performance, while noble metal catalysts have low capacity and are difficult to achieve both high capacity and low overpotential at the same time.
A carbon-free biomimetic nanozyme structure transition metal catalyst was prepared by anchoring nano-metal particles in carbon nanotubes through high-temperature carbon reduction, resulting in a catalyst with porous properties that mimics the structure of natural nanozymes, thereby enhancing catalytic activity and cycle stability.
This achievement enables metal-air batteries to exhibit low reaction overpotential, high specific capacity, and excellent rate performance, thereby improving battery cycle stability and promoting the development of new energy storage technologies.
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Figure CN117673373B_ABST