| Home > Articles > Published articles > Ligand-Mediated Tailoring of Self-Supported MnxOy@Ni(OH)2Nanoheterostructures with Enhanced OER Performance |
| Date: | 2025 |
| Abstract: | We report a colloidal synthesis strategy for producing MnO@Ni(OH)nanoheterostructures under mild conditions, i. e. , low temperature and ambient pressure. The role of carboxylic acid ligands in directing the synthesis is systematically explored, revealing that lower ligand concentrations along with low-molecular weight molecules favor the formation of well-defined MnO@Ni(OH)heterostructures. Electrochemical characterization demonstrates that the resulting nanocomposites exhibit significantly enhanced electrochemical surface area and oxygen evolution reaction (OER) activity compared to their single-component counterparts. Specifically, MnO@Ni(OH)achieves a low overpotential of 299 mV at 10 mA cm, a Tafel slope of 61 mV dec, and a low charge transfer resistance of 9 Ω. The improved OER performance is attributed to the synergistic effect between the Ni(OH)nanosheets, which facilitate *OOH intermediate formation, and the MnOcomponent, known for its intrinsic catalytic activity. Additionally, MnOserves as a stabilizing phase and precursor to MnO, contributing to the overall durability and structural integrity of the catalyst. |
| Grants: | Agencia Estatal de Investigación PID2022-136883OB-C22 Agencia Estatal de Investigación CNS2022-135583 Agencia Estatal de Investigación RYC2019-028414 Agencia Estatal de Investigación CEX2023-001263-S Agencia Estatal de Investigación PID2021-124572OB-C31 Agencia Estatal de Investigación CEX2023-001300-M Generalitat de Catalunya 2021/SGR-01061 Generalitat de Catalunya 2021/SGR-00457 Agencia Estatal de Investigación PRTR-C17.I1 Agencia Estatal de Investigación PID2023-149158OB-C43 Agencia Estatal de Investigación CEX2021-001214-S |
| Note: | Altres ajuts: CERCA Programme/Generalitat de Catalunya |
| Rights: | Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets. |
| Language: | Anglès |
| Document: | Article ; recerca ; Versió sotmesa a revisió |
| Published in: | ACS applied materials & interfaces, Vol. 17, Num. 34 (August 2025) , p. 48838-48848, ISSN 1944-8252 |
Available from: 2026-08-31 Preprint 29 p, 1.5 MB |