@article{
author = "Lopes, Pietro and Li, Dongguo and Lv, Haifeng and Wang, Chao and Tripković, Dušan and Zhu, Yisi and Schimmenti, Roberto and Daimon, Hideo and Kang, Yijin and Snyder, Joshua and Becknell, Nigel and More, Karren and Strmcnik, Dusan and Marković, Nenad M. and Mavrikakis, Manos and Stamenković, Vojislav",
year = "2020",
abstract = "A remaining challenge for deployment of proton-exchange membrane fuel cells is the
limited durability of Pt-nanoscale materials that operate at high voltages during the
cathodic oxygen reduction reaction. In this work, atomic-scale insight into well-defined
single crystalline, thin-film, and nanoscale surfaces exposed Pt dissolution trends that
governed the design and synthesis of durable materials. A newly defined metric, intrinsic
dissolution, is essential to understanding the correlation between the measured Pt loss,
surface structure, size and ratio of Pt-nanoparticles in carbon support. It was found that utilization of Au underlayer promotes ordering of Pt surface atoms towards (111)- structure, while Au on the surface selectively protects low-coordinated Pt sites. This
mitigation strategy was applied towards 3 nm Pt3Au/C nanoparticles, resulting in
elimination of Pt dissolution in liquid electrolyte, including 30-fold durability improvement
vs. 3 nm Pt/C over extended potential range up to 1.2 V.",
publisher = "Nature Publishing Group",
journal = "Nature Materials",
title = "Eliminating dissolution of platinum-based electrocatalysts at the atomic scale",
volume = "19",
pages = "1207-1214",
doi = "10.1038/s41563-020-0735-3"
}