Acidic Oxygen Evolution Reaction Activity, Stability, and Durability of Copper and/or Manganese Cobalt Oxide Spinels

Liu CP, Vang EH, Priamushko T, Roiron C, Cherevko S, Atanassov P (2025)

Publication Type: Journal article

Publication year: 2025

Journal

ACS Catalysis American Chemical Society

Pages Range: 7956-7965

DOI: 10.1021/acscatal.5c00523

Abstract

Cu and Mn was incorporated into Co spinels and the structural and electrochemical properties of the resulting materials were investigated. Cu and Mn were found to reside exclusively in the octahedral sites in the spinel lattice. The incorporation of Mn and especially Cu improved initial activity for the oxygen evolution reaction in an acidic environment. The Mn-containing catalysts demonstrated substantially improved potential cycling durability. This was explained through cyclic voltammetry and online inductively coupled plasma mass spectrometry (ICP-MS) by the role of Mn on limiting the oxidation of tetrahedrally coordinated Co2+. In potentiostatic conditions, however, pure Co spinel outperformed the multimetal oxides over time. In total, these findings stress the importance of stabilizing the tetrahedral Co2+ site through incorporation of other elements, and the improvements in electrochemical activity and stability that can thereby be realized.

Involved external institutions

University of California Los Angeles (UCLA) US United States (USA) (US) Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE)

How to cite

APA:

Liu, C.P., Vang, E.H., Priamushko, T., Roiron, C., Cherevko, S., & Atanassov, P. (2025). Acidic Oxygen Evolution Reaction Activity, Stability, and Durability of Copper and/or Manganese Cobalt Oxide Spinels. ACS Catalysis, 7956-7965. https://doi.org/10.1021/acscatal.5c00523

MLA:

Liu, Christopher Pantayatiwong, et al. "Acidic Oxygen Evolution Reaction Activity, Stability, and Durability of Copper and/or Manganese Cobalt Oxide Spinels." ACS Catalysis (2025): 7956-7965.

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