Related Experiment Video
Updated: Sep 16, 2025

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Complementary effect of co-doping Mn and B in Fe-N-C single-atom catalysts on enhancing the oxygen reduction reaction
Jiansheng Liu1, Lili Cao1, Haoran Ma1
1Inner Mongolia Key Laboratory of Rare Earth Catalysis, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China. chaizhanli@imu.edu.cn.
Abstract:
With more flexible active sites and tunable electronic structures, electrocatalysts constructed based on doping have emerged as a frontier in various catalytic reactions. However, the mechanisms of some co-doped catalysts for the improved performance remain unclear. Herein, we report a distinctive Fe-N-C single-atom catalyst (SAC) co-doped with Mn and B, which displayed excellent oxygen reduction reaction (ORR) performance in an alkaline electrolyte, with a higher half-wave potential of 0.85 V, a lower Tafel slope (61.79 mV dec-1), a larger kinetic current density (3.4 mA cm-2) and a better durability than Fe-NC and Fe-BNC catalysts. Studies on the structure-activity relationship indicated that the co-doping of Mn compensated for the structural issues such as structural distortion, lattice shrinkage, increased defects, and reduction of M-N active sites caused by B doping. It also compensated for performance defects such as slow ORR kinetics, poor electrical conductivity, low selectivity, and weak stability. Consequently, this work validates the immense potential of metal and non-metal co-doped Fe-N-C SACs as active and sustainable ORR catalysts.
More Related Videos
10:57Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
08:13Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area
Published on: February 19, 2018
Related Concept Videos
Cofactors and Coenzymes
Cofactors can be metallic ions or organic molecules called coenzymes. These types of helper...
Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Formation of Complex Ions
Covalent Bonds
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
Role of Reduced Coenzymes NADH and FADH₂
Catalysis