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Single atomic Fe–Nx moieties embedded on a high surface area carbon (Fe–N/C) represents one of the most promising nonprecious metal electrocatalysts for the oxygen reduction reaction (ORR) in polymer electrolyte membrane fuel cells. While significant progress has been made in the preparation of Fe–N/C catalysts with high‐density Fe–Nx sites, key structural descriptors determining the intrinsic activity...
In article number 1906174, Jia Li, Lin Gan, Feiyu Kang, and co‐workers report the direct growth of carbon nanotubes doped with Fe‐N4 moieties for improved electrocatalytic stability in the cathodic oxygen reduction reaction (ORR) in proton‐exchange‐membrane fuel cells. By increasing the neighboring graphitic nitrogen, the Fe‐N4 moieties also show enhanced activity due to the modified spin state of...
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