Premium
Core‐Protected Platinum Monolayer Shell High‐Stability Electrocatalysts for Fuel‐Cell Cathodes
Author(s) -
Sasaki Kotaro,
Naohara Hideo,
Cai Yun,
Choi Yong Man,
Liu Ping,
Vukmirovic Miomir B.,
Wang Jia X.,
Adzic Radoslav R.
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201004287
Subject(s) - platinum , palladium , monolayer , materials science , shell (structure) , dissolution , platinum nanoparticles , fuel cells , chemical engineering , cathode , nanotechnology , catalysis , chemistry , composite material , organic chemistry , engineering
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.