Core‐Protected Platinum Monolayer Shell High‐Stability Electrocatalysts for Fuel‐Cell Cathodes
Kotaro SasakiChemistry Department, Brookhaven National Laboratory, Upton, NY 11973, USAHideo NaoharaToyota Motor Corporation, Fuel Cell System Development Division, Susono, 410-1193 (Japan)Yun CaiChemistry Department, Brookhaven National Laboratory, Upton, NY 11973 (USA),YongMan ChoiChemistry Department, Brookhaven National Laboratory, Upton, NY 11973 (USA),Ping LiuChemistry Department, Brookhaven National Laboratory, Upton, NY 11973 (USA),Miomir B. VukmirovicChemistry Department, Brookhaven National Laboratory, Upton, NY 11973 (USA),Jia X. WangChemistry Department, Brookhaven National Laboratory, Upton, NY 11973 (USA),Radoslav R. AdžićChemistry Department, Brookhaven National Laboratory, Upton, NY 11973 (USA),
2010en
ABI
Annotatsiya
More than skin deep: Platinum monolayers can act as shells for palladium nanoparticles to lead to electrocatalysts with high activities and an ultralow platinum content, but high platinum utilization. The stability derives from the core protecting the shell from dissolution. In fuel-cell tests, no loss of platinum was observed in 200 000 potential cycles, whereas loss of palladium was significant.
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