by Riko Seibo
Tokyo, Japan (SPX) Dec 04, 2025
Researchers on the Korea Institute of Power Analysis report a carbon monoxide pushed course of that kinds metallic skinny movies about 0.3 nanometers thick, enabling quicker fabrication of core-shell gas cell catalysts that scale back platinum utilization whereas sustaining efficiency. The strategy, referred to as CO Adsorption-Induced Deposition, leverages the redox habits and powerful floor affinity of carbon monoxide to deposit atomically managed platinum shells on low value metallic cores with out extra lowering brokers or electrochemical programs.
Core-shell catalysts place a skinny platinum shell over a distinct metallic core to attain excessive oxygen discount response exercise with much less platinum, bettering gas cell economics. The brand new course of adsorbs a single molecular layer of CO on the core floor after which selectively reduces platinum onto that layer to manage shell thickness at roughly 0.3 nanometers.
The strategy reduces processing time to half-hour to 2 hours at kilogram scale, in contrast with greater than 24 hours for standard copper underpotential deposition routes that require tight voltage management and oxide removing steps. By avoiding these steps, CO AID simplifies manufacturing whereas retaining atomic layer precision wanted for top efficiency shells.
Utilizing CO AID, the staff coated platinum onto palladium, gold, and iridium cores. A palladium primarily based platinum core-shell catalyst achieved about double the oxygen discount response exercise and 1.5 occasions the sturdiness in contrast with industrial platinum on carbon benchmarks. The work was carried out with Brookhaven Nationwide Laboratory and revealed on Nov 7, 2025 in ACS Nano, with assist from the Ministry of Science and ICT.
Lead researcher Gu-Gon Park mentioned, “This work originated from the concept of changing carbon monoxide’s toxicity right into a instrument for nanoscale thin-film management. By permitting supplies to be exactly engineered on the atomic stage and drastically lowering processing time, the know-how presents a brand new synthesis paradigm with wonderful prospects for commercialization.”
Crew member Yongmin Kwon added, “With the ability to manipulate the surfaces of metallic nanoparticles on the atomic-layer scale utilizing one thing so simple as carbon monoxide means this know-how may have far-reaching implications-not just for fuel-cell catalyst manufacturing, but in addition for advancing nanoparticle manufacturing in areas equivalent to semiconductors and thin-film supplies.”
Analysis Report:CO Adsorption-Induced Depositon: A Facile and Exact Synthesis Route for Core-Shell Catalysts
Associated Hyperlinks
South Korea Nationwide Analysis Council of Science and Know-how
Bio Gasoline Know-how and Software Information
