Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Electrolysis03:00

Electrolysis

26.4K
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...
26.4K
Controlled-Current Coulometry: Overview01:27

Controlled-Current Coulometry: Overview

205
Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
205
Voltammetry: Factors Affecting Measurements01:21

Voltammetry: Factors Affecting Measurements

156
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...
156
Turbulent Flow: Problem Solving01:09

Turbulent Flow: Problem Solving

129
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures...
129
Coulometry: Overview01:00

Coulometry: Overview

1.5K
Coulometry is one of the rapid, most accurate, and precise analytical techniques that determine the quantity of an analyte by measuring the electrical charge needed for its complete electrolysis without using any analytical standards. The total charge passed during electrolysis correlates with the analyte amount by Faraday's laws of electrolysis. For accurate coulometric measurements, a charge equal to Faraday's constant multiplied by the number of electrons involved in the relevant...
1.5K
Controlled-Potential Coulometry: Electrolytic Methods01:17

Controlled-Potential Coulometry: Electrolytic Methods

167
Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential...
167

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Performance and stability of membrane-photoelectrode assemblies with BiVO<sub>4</sub> photoanodes for water splitting.

Sustainable energy & fuels·2026
Same author

Performance and stability of LaTiO<sub>2</sub>N based photoanodes at varying electrolyte temperatures and irradiances.

EES solar·2026
Same author

Degradation of oxynitride based photoanodes.

Journal of materials chemistry. A·2025
Same author

Mitigation of gas-induced damage in bipolar membranes for CO<sub>2</sub> electrolysis.

Journal of materials chemistry. A·2025
Same author

High-throughput parallel testing of ten photoelectrochemical cells for water splitting: case study on the effects of temperature in hematite photoanodes.

Sustainable energy & fuels·2024
Same author

ICP-MS Assisted EDX Tomography: A Robust Method for Studying Electrolyte Penetration Phenomena in Gas Diffusion Electrodes Applied to CO<sub>2</sub> Electrolysis.

Small methods·2024

Related Experiment Video

Updated: Jul 1, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.2K

Quantifying mass transport limitations in a microfluidic CO2 electrolyzer with a gas diffusion cathode.

Venu Gopal Agarwal1, Sophia Haussener2

  • 1Laboratory of Renewable Energy Science and Engineering, EPFL, Station 9, Lausanne, 1015, Switzerland.

Communications Chemistry
|March 5, 2024
PubMed
Summary

Gas diffusion electrodes (GDEs) improve CO2 transport in CO2 electrolysis, boosting current density. Modeling reveals optimal conditions and suggests electrode design changes for better CO2 utilization and performance.

More Related Videos

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method
12:12

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

Published on: March 16, 2018

22.0K
Characterizing Electron Transport through Living Biofilms
08:52

Characterizing Electron Transport through Living Biofilms

Published on: June 1, 2018

8.4K

Related Experiment Videos

Last Updated: Jul 1, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.2K
On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method
12:12

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

Published on: March 16, 2018

22.0K
Characterizing Electron Transport through Living Biofilms
08:52

Characterizing Electron Transport through Living Biofilms

Published on: June 1, 2018

8.4K

Area of Science:

  • Electrochemistry
  • Chemical Engineering
  • Materials Science

Background:

  • Traditional CO2 electrolysis uses planar immersed electrodes, limiting CO2 transport to the catalyst.
  • Gas diffusion electrodes (GDEs) offer improved mass transport for enhanced electrochemical reactions.

Purpose of the Study:

  • To develop and validate a 2D model of a microfluidic CO2 electrolyzer cathode utilizing a GDE.
  • To investigate the impact of operational parameters and electrode materials on CO2 to CO conversion.
  • To identify strategies for optimizing catalyst utilization and CO partial current density (PCD).

Main Methods:

  • Development of a two-dimensional computational model for the GDE cathode.
  • Validation of the model against experimental data.
  • Simulation of CO2 electrolysis under varying conditions (e.g., flow rates, potentials).

Main Results:

  • The model predicts a peak CO partial current density (PCD) of 75 mA cm⁻² at -1.3 V vs RHE for a fully flooded catalyst layer.
  • CO2 availability near the catalyst surface limits PCD at higher potentials.
  • Electrolyte and CO2 flow rates significantly influence PCD, with a trade-off between PCD and CO2 conversion efficiency.

Conclusions:

  • GDEs enhance CO2 transport, increasing current density in CO2 electrolysis.
  • Significant portions of the catalyst layer remain underutilized in current designs.
  • Optimizing electrode porosity and employing anisotropic layers can improve mass transport and CO PCD.