Mn3O4@CoMn2O4-CoxOy nanoparticles : partial cation exchange synthesis and electrocatalytic properties toward the oxygen reduction and evolution reactions
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Mn3O4@CoMn2O4 nanoparticles (NPs) were produced at low temperature and ambient atmosphere using a one -pot two-step synthesis protocol involving the cation exchange of Mn by Co in preformed Mn3O4 NPs. Selecting the proper cobalt precursor, the nucleation of CoxOy crystallites at the Mn3O4@a CoMn2O4 surface could be simultaneously promoted to form Mn3O4@CoMn2O4-CoxOy NPs. Such heterostructured NPs were investigated for oxygen reduction and evolution reactions (ORR, OER) in alkaline solution. Mn3O4@ CoMn2O4-Cox0y NPs with [Co]/[Mn] = 1 showed low overpotentials of 0.31 Vat(-3) mA.cm(-2) and a small Tafel slope of 52 mV.dec(-1) for ORR, and overpotentials of 0.31 V at 10 mA
CitationLuo, Z., Irtem, E., Ibañez, M., Nafria, R., Martí, S., Genç, A., de la Mata, M., Liu, Y., Cadavid, D., Llorca, J., Arbiol, J., Andreu, T., Morante, J., Cabot, A. Mn3O4@CoMn2O4-CoxOy nanoparticles: partial cation exchange synthesis and electrocatalytic properties toward the oxygen reduction and evolution reactions. "ACS applied materials and interfaces", 13 Juliol 2016, vol. 8, núm. 27, p. 17435-17444.