一种双配位铁单原子 / 石墨烯催化材料及其制备和应用
By in-situ growing iron-based metal-organic framework materials on graphene oxide and treating them at high temperatures, a dual-coordinated iron single-atom catalytic material was prepared. This solved the problems of slow oxygen reduction reaction kinetics and high cost of precious metal catalytic materials in zinc-air batteries, realizing a highly efficient positive electrode catalytic material for zinc-air batteries and improving the discharge performance and stability of the battery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
- Filing Date
- 2021-11-12
- Publication Date
- 2026-07-17
AI Technical Summary
The oxygen reduction reaction kinetics of existing zinc-air batteries are slow, precious metal catalysts are expensive and have poor cycle stability, and non-precious metal catalysts have low oxygen reduction activity and low atom utilization after being combined with carbon-based materials, making it difficult to meet the requirements of high energy density and long cycle life.
Using graphene oxide as a carrier, iron-based metal-organic framework materials are grown in situ, and then a dual-coordinated iron single-atom catalytic material loaded on graphene is prepared by high-temperature treatment in an inert atmosphere. By utilizing the coordination of nitrogen and oxygen atoms with iron single atoms, the catalytic activity and stability are improved.
A low-cost, high-performance zinc-air battery cathode catalytic material has been developed, exhibiting high conductivity, good electrocatalytic activity and stability, thereby improving the discharge power density and cycle life of zinc-air batteries.
Smart Images
Figure CN116130680B_ABST