@article{Li2014, 
author = {Jiayuan Li and Guoxiong Wang and Jing Wang and Shu Miao and Mingming Wei and Fan Yang and Liang Yu and Xinhe Bao},
title = {Architecture of PtFe/C catalyst with high activity and durability for oxygen reduction reaction},
year = {2014},
journal = {Nano Research},
volume = {7},
number = {10},
pages = {1519-1527},
keywords = {oxygen reduction reaction, durability, proton exchange membrane fuel cell, activity, Pt3Fe@Pt-FeOx architecture},
url = {https://www.sciopen.com/article/10.1007/s12274-014-0513-0},
doi = {10.1007/s12274-014-0513-0},
abstract = {A PtFe/C catalyst has been synthesized by impregnation and high-temperature reduction followed by acid-leaching. X-ray diffraction, X-ray photoelectron spectroscopy and X-ray atomic near edge spectroscopy characterization reveal that Pt3Fe alloy formation occurs during high-temperature reduction and that unstable Fe species are dissolved into acid solution. The difference in Fe concentration from the core region to the surface and strong O-Fe bonding may drive the outward diffusion of Fe to the highly corrugated Pt-skeleton, and the resulting highly dispersed surface FeOx is stable in acidic medium, leading to the construction of a Pt3Fe@Pt-FeOx architecture. The as prepared PtFe/C catalyst demonstrates a higher activity and comparable durability for the oxygen reduction reaction compared with a Pt/C catalyst, which might be due to the synergetic effect of surface and subsurface Fe species in the PtFe/C catalyst.}
}