%0 Journal Article
%A Zhu, Guangqi
%A Qi, Yanling
%A Liu, Fan
%A Ma, Shenqian
%A Xiang, Guolei
%A Jin, Fengmin
%A Liu, Zigeng
%A Wei, Wang
%T Reconstructing 1D Fe Single‐atom Catalytic Structure on 2D Graphene film for High‐efficiency Oxygen Reduction Reaction
%J ChemSusChem
%V 14
%N 3
%@ 1864-564X
%C Weinheim
%I Wiley-VCH
%M FZJ-2020-04923
%P 866-875
%D 2021
%X The ordinary intrinsic activity and disordered distribution of metal sites in zero/one-dimensional (0D/1D) single-atom catalysts (SACs) lead to inferior catalytic efficiency and short-term endurance in the oxygen reduction reaction (ORR), which restricts the large-scale application of hydrogen−oxygen fuel cells and metal−air batteries. To improve the activity of SACs, a mild synthesis method was chosen to conjugate 1D Fe SACs with 2D graphene film (Fe SAC@G) that realized a composite structure with well-ordered atomic-Fe coordination configuration. The product exhibits outstanding ORR electrocatalytic efficiency and stability in 0.1 M KOH aqueous solution. DFT-D computational results manifest the intrinsic ORR activity of Fe SAC@G originated from the newly-formed FeN4−O−FeN4 bridge structure with moderate adsorption ability towards ORR intermediates. These findings provide new ways for designing SACs with high activity and long-term stability.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 33236522
%U <Go to ISI:>//WOS:000596585900001
%R 10.1002/cssc.202002359
%U https://juser.fz-juelich.de/record/888455