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Updated: Oct 9, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
A Rhenium Single-Atom Catalyst for the Electrocatalytic Oxygen Reduction Reaction
Xiaohan Zhang1,2, Lu Shang1, Zhaojun Yang1,2
1Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
This study introduces Rhenium Single Atom Catalysts (Re SACs) for the oxygen reduction reaction (ORR). The novel Re SACs demonstrate superior activity and stability compared to traditional catalysts.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Single atom catalysts (SACs) offer high active site utilization and activity.
- Rhenium (Re) metal sites are crucial for many catalytic reactions, but Re SACs remain underexplored.
- Developing Re SACs can maximize Re catalytic sites and enhance catalytic performance.
Purpose of the Study:
- To synthesize and characterize Rhenium Single Atom Catalysts (Re SACs).
- To evaluate the electrocatalytic activity and stability of Re SACs for the oxygen reduction reaction (ORR).
Main Methods:
- Complexation of Re cations with 1,10-phenanthroline on carbon black.
- Heat treatment to form Re SACs.
- Electrochemical evaluation of oxygen reduction reaction (ORR) performance in 0.1 M KOH.
Main Results:
- The synthesized Re SAC achieved an ORR half-wave potential of 0.72 V vs. RHE, outperforming Re nanoparticles (0.67 V vs. RHE).
- Re SAC demonstrated enhanced stability at 0.5 V vs. RHE compared to commercial Pt/C catalysts.
Conclusions:
- Successfully synthesized novel Rhenium Single Atom Catalysts (Re SACs).
- Re SACs exhibit promising electrocatalytic activity and stability for the oxygen reduction reaction (ORR).
- This work opens new avenues for Re-based catalysts in energy conversion applications.
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