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Updated: Aug 9, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Operando Stability of Single-Atom Electrocatalysts
Geunsu Bae1, Sunghoon Han1, Hyung-Suk Oh2,3
1Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
Abstract:
Single-atom catalysts (SACs) are appealing next-generation catalysts for various electrochemical technologies. Along with significant breakthroughs in their initial activity, SACs now face the next challenge for their viable applications, insufficient operational stability. In this Minireview, we summarize the current knowledge of SAC degradation mechanisms mainly based on Fe-N-C SACs, some of the most investigated SACs. Recent studies on isolated metal, ligand, and support degradations are introduced, and the underlying fundamentals of each degradation path are categorized into active site density (SD) and turnover frequency (TOF) losses. Finally, we discuss the challenges and prospects for the future outlook of stable SACs.
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