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Updated: Jun 12, 2026

Anaerobic Protein Purification and Kinetic Analysis via Oxygen Electrode for Studying DesB Dioxygenase Activity and Inhibition
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Published on: October 3, 2018

Decoupling electron transfer defines a quantitative kinetic framework for oxygen evolution catalysis.

Haoyin Zhong1, Junchen Yu1, Qi Zhang1

  • 1Department of Materials Science and Engineering, National University of Singapore, Singapore, Singapore.

Nature Communications
|June 10, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces a new method to measure oxygen evolution reaction kinetics, identifying key steps and catalyst roles. This accelerates the design of efficient electrocatalysts for energy conversion technologies.

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Published on: March 18, 2012

Area of Science:

  • Electrochemistry
  • Materials Science
  • Energy Conversion Technologies

Background:

  • Oxygen evolution reaction (OER) is crucial for energy technologies but limited by slow kinetics.
  • Current catalyst design is empirical, lacking insight into elementary reaction steps.

Purpose of the Study:

  • To develop a method for quantitatively determining the kinetics of elementary steps in OER.
  • To establish a step-resolved kinetic framework for rational electrocatalyst design.

Main Methods:

  • Utilized open-circuit voltage-pulse voltammetry to measure the rate of *OOH formation.
  • Employed pulse voltammetry to quantify *OH deprotonation kinetics.
  • Coupled these methods to create a unified kinetic framework.

Main Results:

  • Quantified the *OOH formation rate, a rate-determining step in OER.
  • Demonstrated that Fe primarily enhances *OOH formation, while Mn promotes *OH deprotonation.
  • Developed a NiFeMn catalyst that improves both steps, enhancing OER performance.

Conclusions:

  • The developed methodology allows for quantitative measurement of elementary reaction kinetics.
  • Provides insights into how dopants selectively influence OER steps.
  • Accelerates the discovery of high-performance electrocatalysts for energy conversion.