A remaining challenge for deployment of proton-exchange membrane fuel cells is thelimited durability of Pt-nanoscale materials that operate at high voltages during thecathodic oxygen reduction reaction. In this work, atomic-scale insight into well-definedsingle crystalline, thin-film, and nanoscale surfaces exposed Pt dissolution trends thatgoverned the design and synthesis of durable materials. A newly defined metric, intrinsicdissolution, 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. Thismitigation strategy was applied towards 3 nm Pt3Au/C nanoparticles, resulting inelimination of Pt dissolution in liquid electrolyte, including 30-fold durability improvementvs. 3 nm Pt/C over extended potential range up t...o 1.2 V.
Keywords:
Electrocatalysis / Fuel cells / Materials for energy and catalysis
Source:
Nature Materials, 2020, 19, 1207-1214
Publisher:
Nature Publishing Group
Projects:
US Department of Energy (DOE), contract no. DE-AC02-06CH11357
US Department of Energy (DOE), grantant DE-FG02-05ER15731
US Department of Energy (DOE), contract no. DE-AC02-05CH11231
TY - JOUR
AU - Lopes, Pietro
AU - Li, Dongguo
AU - Lv, Haifeng
AU - Wang, Chao
AU - Tripković, Dušan
AU - Zhu, Yisi
AU - Schimmenti, Roberto
AU - Daimon, Hideo
AU - Kang, Yijin
AU - Snyder, Joshua
AU - Becknell, Nigel
AU - More, Karren
AU - Strmcnik, Dusan
AU - Marković, Nenad M.
AU - Mavrikakis, Manos
AU - Stamenković, Vojislav
PY - 2020
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/3699
AB - A remaining challenge for deployment of proton-exchange membrane fuel cells is thelimited durability of Pt-nanoscale materials that operate at high voltages during thecathodic oxygen reduction reaction. In this work, atomic-scale insight into well-definedsingle crystalline, thin-film, and nanoscale surfaces exposed Pt dissolution trends thatgoverned the design and synthesis of durable materials. A newly defined metric, intrinsicdissolution, 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. Thismitigation strategy was applied towards 3 nm Pt3Au/C nanoparticles, resulting inelimination of Pt dissolution in liquid electrolyte, including 30-fold durability improvementvs. 3 nm Pt/C over extended potential range up to 1.2 V.
PB - Nature Publishing Group
T2 - Nature Materials
T1 - Eliminating dissolution of platinum-based electrocatalysts at the atomic scale
VL - 19
SP - 1207
EP - 1214
DO - 10.1038/s41563-020-0735-3
ER -
@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 thelimited durability of Pt-nanoscale materials that operate at high voltages during thecathodic oxygen reduction reaction. In this work, atomic-scale insight into well-definedsingle crystalline, thin-film, and nanoscale surfaces exposed Pt dissolution trends thatgoverned the design and synthesis of durable materials. A newly defined metric, intrinsicdissolution, 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. Thismitigation strategy was applied towards 3 nm Pt3Au/C nanoparticles, resulting inelimination of Pt dissolution in liquid electrolyte, including 30-fold durability improvementvs. 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"
}
Lopes, P., Li, D., Lv, H., Wang, C., Tripković, D., Zhu, Y., Schimmenti, R., Daimon, H., Kang, Y., Snyder, J., Becknell, N., More, K., Strmcnik, D., Marković, N. M., Mavrikakis, M.,& Stamenković, V.. (2020). Eliminating dissolution of platinum-based electrocatalysts at the atomic scale. in Nature Materials
Nature Publishing Group., 19, 1207-1214.
https://doi.org/10.1038/s41563-020-0735-3
Lopes P, Li D, Lv H, Wang C, Tripković D, Zhu Y, Schimmenti R, Daimon H, Kang Y, Snyder J, Becknell N, More K, Strmcnik D, Marković NM, Mavrikakis M, Stamenković V. Eliminating dissolution of platinum-based electrocatalysts at the atomic scale. in Nature Materials. 2020;19:1207-1214.
doi:10.1038/s41563-020-0735-3 .
Lopes, Pietro, Li, Dongguo, Lv, Haifeng, Wang, Chao, Tripković, Dušan, Zhu, Yisi, Schimmenti, Roberto, Daimon, Hideo, Kang, Yijin, Snyder, Joshua, Becknell, Nigel, More, Karren, Strmcnik, Dusan, Marković, Nenad M., Mavrikakis, Manos, Stamenković, Vojislav, "Eliminating dissolution of platinum-based electrocatalysts at the atomic scale" in Nature Materials, 19 (2020):1207-1214,
https://doi.org/10.1038/s41563-020-0735-3 . .
