期刊
TOPICS IN CATALYSIS
卷 46, 期 3-4, 页码 285-305出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11244-007-9000-0
关键词
fuel cell; catalyst; platinum; nanoparticles; durability; dissolution; coarsening; crystal migration; transmission electron microscopy; TEM; Ostwald ripening; solubility; coalescence
This paper discusses the mechanisms of surface area loss of supported platinum (Pt) electrocatalysts in low-temperature fuel cells. It is argued that submonolayer dissolution of Pt nanoparticles governs the surface area loss at high voltages by increasing the loss of Pt from carbon and coarsening of Pt nanoparticles on carbon.
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