Preparation of Fe–N–C catalysts with FeN<sub>x</sub> (<i>x</i> = 1, 3, 4) active sites and comparison of their activities for the oxygen reduction reaction and performances in proton exchange membrane fuel cells
Yongcheng Li(Beihang University), Xiaofang Liu(Beihang University), Lirong Zheng(Chinese Academy of Sciences), Jiaxiang Shang(Beihang University), Xin Wan(Beihang University), Riming Hu(Beihang University), Xu Guo(Beihang University), Song Hong(Institute of Process Engineering), Jianglan Shui(Beihang University)
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Abstract
The active sites of Fe–N–C catalysts are nitrogen coordinated iron atoms, FeN<italic>x</italic>(<italic>x</italic> = 1–5), that have five possible coordination numbers, corresponding to different ORR activities and PEMFC performances.
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