Israeli Scientists Develop Blue Pigment Catalyst to Replace Platinum in Hydrogen Energy

Researchers at Israel's Technion have developed inexpensive catalysts based on a blue pigment that could replace expensive platinum in hydrogen fuel cells. Platinum is currently the most common catalyst in fuel cells, but its rarity and high cost hinder the scaling of clean hydrogen technologies, making them uncompetitive with traditional fuels. Seeking an affordable alternative, the scientists focused on inexpensive synthetic blue pigments with a metal-complex structure. Previous molecular catalysts of this type lacked sufficient power and durability. The research team synthesized two new pigment types and applied them to a carbon base. Spectroscopic and electron microscopy analyses confirmed the new catalyst's atomic-level functionality. Published in the journal ACS Catalysis, the material, named AZ-FO-30, achieved a record peak power density of 902 milliwatts per square centimeter for pigment catalysts. It also demonstrated high stability, operating for 35 hours under heavy load with minimal degradation. Theoretical calculations indicated that increased nitrogen content, achieved by the scientists, reduces the distance between iron and oxygen, enhancing interaction within the active center and improving the efficiency of the hydrogen fuel cell. The authors stated that precise molecular design can bridge the performance gap between platinum and cheaper catalysts. By adjusting the blue pigment's molecular structure, they enhanced active center interaction and achieved a tangible increase in fuel cell efficiency. These affordable catalysts could enable the widespread adoption of fuel cells in transportation, energy, and industry, making clean hydrogen energy economically viable.