1
|
Jaramillo D, Alvarez G, Díaz C, Pérez S, Muñoz Saldaña J, Sierra L, López BL, Moreno-Zuria A, Mohamedi M, Palacio R. Porous carbonaceous materials simultaneously dispersing N, Fe and Co as bifunctional catalysts for the ORR and OER: electrochemical performance in a prototype of a Zn-air battery. Dalton Trans 2024. [PMID: 38236157 DOI: 10.1039/d3dt03330a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Infiltration of the mesoporous structure of SBA-15 silica as a hard template with phenanthroline complexes of Fe3+ and Co2+ allowed the simultaneous dispersion of nitrogen, iron and cobalt species on the surface of the obtained carbonaceous CMK-3 silica replica, with potential as bifunctional heterogeneous catalysts for the cathodic oxygen reduction and evolution reactions (ORR and OER). The textural properties and mesopore structure depended on the composition of the material. The carbonaceous FeCoNCMK-3 (1/1), obtained with an Fe/Co molar ratio of 1/1, exhibited an ordered cylindrical mesoporous structure with a high mesopore volume, a rather homogeneous composition in terms of total and surface concentrations of iron and cobalt, and a balanced presence of pyridinic-, pyrrolic- and graphitic-N species. FeCoNCMK-3 (1/1) could improve the ORR kinetics by adsorption and reduction of O2 through the 4-electron mechanism with a current density of -17.37 mA cm-2, Eonset of 1.13 V vs. RHE and E1/2 of 0.75 V when compared to metal-free, monometallic or bimetallic electrocatalysts with a higher amount of cobalt than that of iron. In addition, FeCoNCMK-3 (1/1) exhibited activity for the OER, presenting lower values of Eonset (1.52 V), Ej10 (1.78 V) and the Tafel slope (76.3 mV dec-1) with respect to other catalysts. When evaluated as a cathode in a prototype of a Zn-air battery, FeCoNCMK-3 (1/1) exhibited a high open circuit voltage of 1.41 V, a peak power density of 66.84 mW cm-2, a large specific capacity of 818.88 mA h gZn-1, and cycling for 20 h but with deactivation upon cycling.
Collapse
Affiliation(s)
- Daniela Jaramillo
- Grupo de Investigación Ciencia de los Materiales, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Calle 70 No 52 - 21, Medellín, Antioquia, 050010, Colombia.
| | - German Alvarez
- Grupo de Investigación Ciencia de los Materiales, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Calle 70 No 52 - 21, Medellín, Antioquia, 050010, Colombia.
| | - Cristian Díaz
- Grupo de Investigación Ciencia de los Materiales, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Calle 70 No 52 - 21, Medellín, Antioquia, 050010, Colombia.
| | - Sebastián Pérez
- Laboratorio Nacional de Proyección Térmica (CENAPROT), Centro de Investigación y de Estudios Avanzados del IPN, Libramiento Norponiente 2000 Fracc. Real de Juriquilla, 76230 Querétaro, Mexico
| | - Juan Muñoz Saldaña
- Laboratorio Nacional de Proyección Térmica (CENAPROT), Centro de Investigación y de Estudios Avanzados del IPN, Libramiento Norponiente 2000 Fracc. Real de Juriquilla, 76230 Querétaro, Mexico
| | - Ligia Sierra
- Grupo de Investigación Ciencia de los Materiales, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Calle 70 No 52 - 21, Medellín, Antioquia, 050010, Colombia.
| | - Betty Lucy López
- Grupo de Investigación Ciencia de los Materiales, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Calle 70 No 52 - 21, Medellín, Antioquia, 050010, Colombia.
| | - Alonso Moreno-Zuria
- Institut National de la Recherche Scientifique (INRS), Énergie Matériaux Télécommunications (EMT), 1650 Boulevard Lionel-Boulet, Varennes, Québec Canada, J3X1P7, Canada
| | - Mohamed Mohamedi
- Institut National de la Recherche Scientifique (INRS), Énergie Matériaux Télécommunications (EMT), 1650 Boulevard Lionel-Boulet, Varennes, Québec Canada, J3X1P7, Canada
| | - Ruben Palacio
- Grupo de Investigación Ciencia de los Materiales, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Calle 70 No 52 - 21, Medellín, Antioquia, 050010, Colombia.
| |
Collapse
|