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EnglishIn this work a series of Co3O4 spinels were produced by different synthesis routes (precipitation, solution combustion synthesis, hard template method), and were used as non-noble catalysts for the oxygen evolution reaction (OER) under basic conditions. The investigated catalysts have a proportional relation between electrochemical activity, surface roughness and specific surface area. The hard-template synthesis method resulted in the most active catalyst compared in this work, which we ascribe to its highly porous structure, and concomitant Co3+/Co4+ redox couple at a lower potential, attributed to the OER. The most performant catalyst was compared with a commercial catalyst (Ni@NiO, Alfa Aesar) showing only 0.01 V overpotential difference, evaluated at 10 mA·cm–2 (overpotential 0.44 V).
Benchmark comparison of Co3O4 spinel-structured oxides with different morphologies for oxygen evolution reaction under alkaline conditions / Monteverde Videla, A.H.; Stelmachowski, P.J.; Ercolino, G.; Specchia, S.. - In: JOURNAL OF APPLIED ELECTROCHEMISTRY. - ISSN 0021-891X. - STAMPA. - 47:3(2017), pp. 295-304.
| Titolo: | Benchmark comparison of Co3O4 spinel-structured oxides with different morphologies for oxygen evolution reaction under alkaline conditions |
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| Data di pubblicazione: | 2017 |
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| Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/s10800-016-1040-3 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11583/2660283
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