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Surface Electronic Modulation with Hetero-Single Atoms to Enhance Oxygen Evolution Catalysis.
Feng Li1, Gao-Feng Han1, Jong-Pil Jeon1
1School of Energy and Chemical Engineering/Center for Dimension-Controllable Organic Frameworks, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST, Ulsan 44919, South Korea.
ACS Nano
|June 29, 2021
Summary
Researchers enhanced oxygen evolution catalysis by atomically implanting Rhodium single atoms into Copper oxide. This novel strategy significantly boosts catalyst performance for green energy applications.
Area of Science:
- Materials Science
- Catalysis
- Electrochemistry
Background:
- Oxygen evolution catalysis is vital for solar-to-fuel energy conversion.
- Developing efficient and stable catalysts for this process remains a significant challenge.
Purpose of the Study:
- To activate an inefficient oxygen evolution catalyst using a single atom tailoring strategy.
- To investigate the effect of Rhodium single atoms on Copper oxide catalytic activity.
Main Methods:
- Atomic implantation of Rhodium (Rh) into a Copper (Cu) oxide matrix.
- Dispersing Cu2O nanocubes in RhCl3 solution for ion exchange.
- Characterization of the activated catalyst (Cu2O-RhSA) and theoretical studies.
Main Results:
- The Cu2O-RhSA catalyst showed significantly enhanced oxygen evolution activity in alkaline media.
- Performance surpassed pristine Cu2O and commercial IrO2 catalysts.
- Theoretical studies confirmed Rh SAs modulated electronic structure for improved catalysis.
Conclusions:
- Single atom tailoring is an effective strategy to activate inefficient catalysts.
- Cu2O-RhSA demonstrates superior performance for oxygen evolution reactions.
- This approach offers a promising pathway for developing advanced electrocatalysts for green energy.
