Related Experiment Video
Updated: May 11, 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
Dual Doping of N and F on Co3O4 to Activate the Lattice Oxygen for Efficient and Robust Oxygen Evolution Reaction
Chen Li1,2,3, Beirong Ye1, Bo Ouyang4
1Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 611731, China.
Abstract:
The oxygen evolution reaction (OER) is a pivotal process in numerous renewable energy conversion technologies. However, its sluggish intrinsic kinetics and intricate transfer process impede the efficient conversion of energy. Activating the lattice oxygen mechanism (LOM) is of paramount importance to break through the theoretical scaling relationship and boost the oxygen evolution catalytic activity. In this contribution, N and F are successfully introduced into Co3O4 simultaneously as heteroatoms via a controllable plasma strategy to modulate the covalency property of metal-oxygen. Theoretical simulations and experiment results demonstrated that the covalency of the cobalt-oxygen bond is significantly enhanced under the synergistic effect of N and F, successfully triggering the LOM pathway and facilitating the OER process. The N, F-Co3O4 composite displays an impressive OER performance, exhibiting a low overpotential of 254 mV at 10 mA cm-2 and remarkable stability at 20, 150, and 400 mA cm-2. In addition, The N, F-Co3O4 also exhibits a low overpotential of 285 mV at 20 mA cm-2 in 1 m KOH + 0.5 m NaCl solution, and remarkable performance on overall water splitting. This work offers profound insights into the OER mechanism and a crucial strategy for enhancing the electrocatalytic activity of spinel oxides.
More Related Videos
10:57Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
11:58Synthesis and Functionalization of Nitrogen-doped Carbon Nanotube Cups with Gold Nanoparticles as Cork Stoppers
Published on: May 13, 2013
Related Concept Videos
02:42Valence Bond Theory
03:02Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
02:34Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly,...
01:08Covalent 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,...
01:19Nitrosation of Enols
02:24Polar Covalent Bonds