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Active Sites Regulation for High-Performance Oxygen Evolution Reaction Electrocatalysts.
Yu Tang1, Tianyi Zhang2, Xuan Wu1
1Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology, Yunnan Normal University, Kunming, China.
Frontiers in Chemistry
|May 16, 2022
Summary
Developing efficient electrocatalysts for oxygen evolution reactions (OER) is crucial for scalable hydrogen production via water splitting. This review covers recent advances in OER catalyst design and mechanism understanding.
Area of Science:
- Electrochemistry
- Materials Science
- Catalysis
Background:
- Electrochemical water splitting offers a sustainable route for high-purity hydrogen and oxygen production.
- The oxygen evolution reaction (OER) is kinetically hindered, demanding high overpotentials and limiting energy efficiency.
Purpose of the Study:
- To review recent advancements in oxygen evolution reaction (OER) electrocatalysts over the past decade.
- To highlight strategies for active site regulation in various catalyst classes for improved OER performance.
- To explore OER reaction mechanisms using in situ techniques and DFT calculations.
Main Methods:
- Review of literature on OER electrocatalyst development.
- Analysis of active site engineering in single-atom catalysts, high-entropy alloys, transition metal oxides, and transition metal chalcogenides.
- Discussion of in situ techniques and Density Functional Theory (DFT) for mechanistic studies.
Main Results:
- Recent progress in OER electrocatalysts demonstrates improved performance through active site regulation.
- Various material classes, including precious metal single atoms, high-entropy alloys, transition metal oxides, and chalcogenides, show promise.
- In situ techniques and DFT calculations provide deeper insights into OER mechanisms.
Conclusions:
- High-performance OER electrocatalysts are essential for the commercial viability of water splitting.
- Tailoring active sites is a key strategy for enhancing OER catalytic activity.
- Further mechanistic understanding will guide the development of next-generation OER electrocatalysts.
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