Researchers have recently announced a significant breakthrough in the development of a platinum-substitute catalyst for fuel cells. Hydrogen-powered vehicles that use Proton Exchange Membrane Fuel Cells (PEMFC) heavily rely on platinum catalysts for electrode reactions.
In particular, the electrochemical reaction at the fuel cell cathode has been observed to be slow, necessitating a large amount of platinum catalyst to enhance the reaction.
A collaborative research team has successfully developed a new "single-atom iron-nitrogen-carbon-phosphorus material" for the cathode, which can replace platinum, and they have identified its activation mechanism.
What makes this catalyst particularly noteworthy is its applicability not only to commercialized PEMFCs but also to the next-generation Anion Exchange Membrane Fuel Cells (AEMFC).
The newly developed material features trace amounts of iron atoms dispersed within a carbon matrix, with nitrogen and phosphorus bonding around them.
Experts explain that by incorporating phosphorus into the active portion of the existing single-atom iron-nitrogen-carbon catalyst, they have successfully overcome limitations and improved performance.
Fuel cells are complex reaction systems, making it challenging to apply newly developed catalysts to practical fuel cells. However, this catalyst has been successfully applied to both PEMFCs and AEMFCs, achieving significant performance enhancements.
