Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Oxidation-Reduction Reactions

Oxidation-Reduction Reactions

Oxidation–Reduction Reactions

Thermal and Photochemical Electrocyclic Reactions: Overview

Thermal and Photochemical Electrocyclic Reactions: Overview

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.

You might also read

Related Articles

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

Sort by

Same author

Oxygen evolution reaction: Bifunctional mechanism breaking the linear scaling relationship.

The Journal of chemical physics·2020

Same author

Note: Assessment of the SCAN+rVV10 functional for the structure of liquid water.

The Journal of chemical physics·2017

See all related articles

Search research articles

Related Experiment Video

Updated: Nov 21, 2025

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

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

Published on: April 10, 2018

High-performance NiOOH/FeOOH electrode for OER catalysis.

Patrick Gono¹, Alfredo Pasquarello¹

¹Chair of Atomic Scale Simulation (CSEA), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.

The Journal of Chemical Physics

|January 15, 2021

Summary

This summary is machine-generated.

This study reveals a bifunctional mechanism for NiOOH/FeOOH oxygen evolution reaction (OER) catalysts, overcoming limitations by replacing intermediates. This approach significantly enhances OER catalyst performance.

More Related Videos

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Published on: June 21, 2017

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

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

Published on: March 16, 2018

Related Experiment Videos

Last Updated: Nov 21, 2025

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

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

Published on: April 10, 2018

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Published on: June 21, 2017

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

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

Published on: March 16, 2018

Area of Science:

Electrochemistry
Materials Science
Catalysis

Background:

Oxygen evolution reaction (OER) catalysts are crucial for energy conversion technologies.
Existing catalysts face limitations due to linear scaling relationships between intermediates.
NiOOH/FeOOH systems show promise but require mechanistic understanding.

Purpose of the Study:

To investigate the bifunctional mechanism of NiOOH/FeOOH catalysts for OER.
To explore how distinct active sites in NiOOH/FeOOH can overcome scaling limitations.
To computationally assess various interfaces of FeOOH and NiOOH for OER.

Main Methods:

Computational Hydrogen Electrode (CHE) method.
Modeling of FeOOH catalyst and NiOOH hydrogen acceptor.
Evaluation of different interfacial configurations of NiOOH/FeOOH.

Main Results:

A bifunctional mechanism involving adsorbed O2 on FeOOH and adsorbed H on NiOOH was identified.
This mechanism effectively replaces the unfavorable OOHads intermediate.
Calculations predicted low overpotentials as low as 0.16 V for optimized interfaces.

Conclusions:

The bifunctional mechanism is key to the high performance of NiOOH/FeOOH OER catalysts.
This strategy successfully circumvents the detrimental effects of linear scaling relationships.
Optimized interfaces of NiOOH/FeOOH offer a promising pathway for efficient OER catalysis.