Related Experiment Video
Updated: Jun 11, 2025

05:03
Precise Electrochemical Sizing of Individual Electro-Inactive Particles
Published on: August 4, 2023
1.2K
Dynamic evolution processes in electrocatalysis: structure evolution, characterization and regulation
Chao Xie1,2, Wei Chen3, Yanyong Wang3
1College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China. xc9229@outlook.com.
Chemical Society Reviews
|October 9, 2024
Summary
Electrocatalytic reactions are dynamic, not steady-state. This review highlights dynamic evolution processes and their importance for improving electrocatalytic performance.
Area of Science:
- Surface Chemistry
- Materials Science
- Electrochemistry
Background:
- Electrocatalytic reactions involve complex, dynamic processes like diffusion, adsorption, and reactant-catalyst interactions.
- These processes are typically unsteady-state, deviating from equilibrium conditions.
- The dynamic evolution of electrocatalytic interfaces significantly impacts reaction kinetics.
Purpose of the Study:
- To provide insights into dynamic evolution processes in electrocatalysis.
- To emphasize the importance of unsteady-state processes for catalytic reaction kinetics.
- To review methods for characterizing and regulating dynamic evolution for enhanced performance.
Main Methods:
- Literature review focusing on dynamic evolution in electrocatalysis.
- Analysis of dynamic structure evolution of electrocatalysts.
- Summary of characterization techniques and regulation strategies for dynamic processes.
Main Results:
- Dynamic structural changes in electrocatalysts are crucial for their performance.
- Various methods exist for characterizing these dynamic evolutions.
- Strategies for regulating dynamic evolution can significantly improve electrocatalytic efficiency.
Conclusions:
- Understanding dynamic evolution is key to advancing electrocatalysis.
- Future research should focus on unsteady-state processes at microscopic scales.
- This review provides a foundation for deeper investigation into dynamic electrocatalytic phenomena.
Related Concept Videos
Electrolysis
26.1K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
26.1K
Electrochemistry: Overview
1.5K
Electrochemistry is the branch of chemistry that studies the relationship between electrical quantities and chemical reactions, particularly oxidation and reduction. Oxidation is the loss of electrons from a substance, whereas reduction refers to the gain of electrons. A substance with a strong electron affinity is called an oxidizing agent (oxidant), and a reducing agent (reductant) is a species that donates electrons. Oxidation and reduction processes are pivotal to electrochemical reactions,...
1.5K
Thermal and Photochemical Electrocyclic Reactions: Overview
2.3K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.3K
Electromotive Force
25.9K
Electricity is generated by either electrons or ions flowing through a solution or a conducting medium. This flow of electrons or specifically electrical charge is defined as an electric current. When electrons move through a wire, they generate an electric current. It can be recalled that in a redox reaction, electrons are lost and gained. In the spontaneous redox reaction of zinc with copper, when zinc is immersed in a copper ion solution, a transfer of electrons from one...
25.9K
Interfacial Electrochemical Methods: Overview
221
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
221
Voltammetry: Factors Affecting Measurements
137
A current produced due to the redox reactions of the analyte at the working and auxiliary electrodes is called a faradaic current. The reaction can be divided into two types. The current generated due to the reduction of the analyte is called cathodic current, and it carries a positive charge. In contrast, the current produced by analyte oxidation is known as an anodic current, and it has a negative charge. The applied potential at the working electrode determines the faradaic current flow, and...
137

