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Categories: advanced materials, energy
BSA 04-28: Synthesis of Metal-Coated Palladium and Palladium-Alloy Particles
BNL Reference Number: BSA 04-28
Patent Status: U.S. Patent Number 7,507,495 was issued on March 24, 2009
Summary
High resolution electron micrograph of a palladium nanoparticle coated with a monolayer of platinum.
Platinum is an excellent catalyst for many reactions. However, it is also very expensive. The catalytic activity per gram of platinum can be increased by using a particle composite consisting of an atomically thin layer of the metal on a palladium alloy particle. When used as an electrocatalyst for the oxygen reduction reaction, this structure exhibits up to twenty times the platinum mass catalytic activity of commercially available platinum/carbon electrocatalysts. These structures can be used in fuel cells and other electrocatalytic or heterogeneous catalytic applications.
Description
This inventive method allows deposition of sub-monoatomic and monoatomic layers of metals such as platinum onto palladium or palladium-alloy particles.
Benefits
The platinum/palladium alloy particle composite offers high catalytic activity at lower cost than bulk platinum/carbon catalysts.
Applications and Industries
Fuel cell catalysts; replacement for platinum/carbon catalysts and electrocatalysts; heterogeneous catalysis
Have Questions?
For more information about this technology, contact Kimberley Elcess, (631) 344-4151.
