@article{85b7285aef5f4149ba80678a3d23135a,
title = "Atomically dispersed Pt and Fe sites and Pt–Fe nanoparticles for durable proton exchange membrane fuel cells",
abstract = "Proton exchange membrane fuel cells convert hydrogen and oxygen into electricity without emissions. The high cost and low durability of Pt-based electrocatalysts for the oxygen reduction reaction hinder their wide application, and the development of non-precious metal electrocatalysts is limited by their low performance. Here we design a hybrid electrocatalyst that consists of atomically dispersed Pt and Fe single atoms and Pt–Fe alloy nanoparticles. Its Pt mass activity is 3.7 times higher than that of commercial Pt/C in a fuel cell. More importantly, the fuel cell with a low Pt loading in the cathode (0.015 mgPt cm−2) shows an excellent durability, with a 97% activity retention after 100,000 cycles and no noticeable current drop at 0.6 V for over 200 hours. These results highlight the importance of the synergistic effects among active sites in hybrid electrocatalysts and provide an alternative way to design more active and durable low-Pt electrocatalysts for electrochemical devices. [Figure not available: see fulltext.]",
author = "Fei Xiao and Qi Wang and Xu, {Gui Liang} and Xueping Qin and Inhui Hwang and Sun, {Cheng Jun} and Min Liu and Wei Hua and Wu, {Hsi wen} and Shangqian Zhu and Li, {Jin Cheng} and Wang, {Jian Gan} and Yuanmin Zhu and Duojie Wu and Zidong Wei and Meng Gu and Khalil Amine and Minhua Shao",
note = "Funding Information: This work was supported by the National Key R&D Program of China (no. 2020YFB1505800, M.S.), Shenzhen Science and Technology Innovation Committee (SGDX2019081623340748, M.S.), the Research Grant Council of the Hong Kong Special Administrative Region (N_HKUST610/17, M.S.), Innovation and Technology Commission of the Hong Kong Special Administrative Region (grant no. ITC-CNERC14EG03, M.S.), Foshan-HKUST Project (FSUST19-FYTRI07, M.S.), Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) (SMSEGL20SC01, M.S.) and Shenzhen Natural Science Fund (grant no. 20200925154115001, M.G.). This research used resources of the Advanced Photon Source, an Office of Science User Facility operated for the US Department of Energy (DOE) Office of Science by Argonne National Laboratory, and was supported by US DOE contract no. DE-AC02-06CH11357 (K.A. and G.-L.X.) and the Canadian Light Source and its funding partners. G.-L.X. and K.A. acknowledge the support of the US China Clean Energy Research Center (CERC-CVC2). We thank the Tianhe-2 National Supercomputer Center in Guangzhou and the high-performance computing service in HKUST and the TEM work performed at the Pico Center in the SUSTech core research facility. Publisher Copyright: {\textcopyright} 2022, The Author(s).",
year = "2022",
month = jun,
doi = "10.1038/s41929-022-00796-1",
language = "English",
volume = "5",
pages = "503--512",
journal = "Nature Catalysis",
issn = "2520-1158",
publisher = "Nature Publishing Group",
number = "6",
}