Researchers from the Chinese Academy of Sciences have developed a fluorinated graphene catalyst, designated as FG-3, to improve zinc-air battery performance. The material contains 3.1% fluorine and was created by a team led by Dr. Wen Zhenhai and Dr. Huang Junheng at the Fujian Institute of Research on the Structure of Matter.
The new catalyst utilizes a two-electron oxygen conversion mechanism to hydrogen peroxide, which enhances reaction kinetics and reversibility. By applying controlled heating, the scientists managed to restore the electrical conductivity of the graphene structure while precisely adjusting the fluorine content.
In laboratory tests, the battery demonstrated stable operation for over 820 hours in ambient air. After 1500 charge and discharge cycles, the system maintained 97.6% efficiency. These results suggest a potential pathway for developing metal-free carbon catalysts for energy storage.
While the technology shows promise as an alternative to lithium-ion batteries due to the availability of raw materials and high theoretical energy density, it remains in the experimental stage. Further testing is required to determine the feasibility of commercial application.
