A nickel catalyst defies precious metals, unlocking high-performance fuel cells that could transform energy for vehicles, generators, and remote power systems.
Researchers at Cornell University have developed a nickel-based catalyst that enables high-performance fuel cells without relying on precious metals. Designed for alkaline environments, the catalyst maintains strong hydrogen oxidation reaction activity while paired with a nonprecious oxygen reduction catalyst, surpassing U.S. Department of Energy performance targets. This breakthrough advances low-cost, high-efficiency fuel cells for transportation, stationary generators, and remote electricity systems.
At the system level, the technology removes the need for costly platinum or palladium, reducing one of the largest barriers to broad fuel cell deployment. The alkaline environment allows inexpensive metals such as nickel, cobalt, and iron to replace precious catalysts, lowering costs by hundreds of times without sacrificing performance.
From a materials perspective, the innovation relies on a thin carbon coating, derived from graphene, that protects nickel from oxidation while allowing electron tunneling to sustain the reaction. Microscopic and spectroscopic studies confirmed the coating preserves a metallic nickel surface essential for catalyzing hydrogen oxidation, while preventing bulk oxidation during operation.
The coated nickel catalyst achieves a power density of 1 watt per square centimeter, exceeding DOE targets for precious-metal-based cells. The work also addresses durability, reaching about 2,000 operational hours with potential improvements approaching the DOE stability benchmark of 15,000 hours. These results demonstrate that alkaline fuel cells can combine high efficiency, low cost, and scalable production for diverse energy applications.
“This has the potential to be transformative in the application of fuel cells broadly defined because it steps away from the need for precious metals,” says Héctor D. Abruña, Émile M. Chamot Professor of Chemistry and Chemical Biology at Cornell. “It has the performance metrics people have been looking for in very inexpensive materials.”
