Mechanochemically synthetized pan-based co-n-doped carbon materials as electrocatalyst for oxygen evolution reaction

We report a new class of polyacrylonitrile (PAN)-based Co-N-doped carbon materials that can act as suitable catalyst for oxygen evolution reactions (OER). Different Co loadings were mechanochemically added into post-consumed PAN fibers. Subsequently, the samples were treated at 300◦C under air (PAN-A) or nitrogen (PAN-N) atmosphere to promote simultaneously the Co3O4 species and PAN cyclization. The resulting electrocatalysts were fully characterized and analyzed by X-ray diffraction (XRD) and photoelectron spectroscopy (XPS), transmission (TEM) and scanning electron (SEM) microscopies, as well as nitrogen porosimetry. The catalytic performance of the Co-N-doped carbon nanomaterials were tested for OER in alkaline environments. Cobalt-doped PAN-A samples showed worse OER electrocatalytic performance than their homologous PAN-N ones. The PAN-N/3% Co catalyst exhibited the lowest OER overpotential (460 mV) among all the Co-N-doped carbon nanocomposites, reaching 10 mA/cm2 . This work provides in-depth insights on the electrocatalytic performance of metal-doped carbon nanomaterials for OER. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Authors
Gómez-López P.1 , Salatti-Dorado J.Á.2 , Rodríguez-Padrón D. 1 , Cano M.2 , Alvarado-Beltrán C.G.3 , Puente-Santiago A.R.4 , Giner-Casares J.J.2 , Luque R. 1, 5
Journal
Publisher
MDPI AG
Number of issue
2
Language
English
Pages
1-13
Status
Published
Number
290
Volume
11
Year
2021
Organizations
  • 1 Grupo FQM-383, Departamento de Química Orgánica, Universidad de Córdoba, Córdoba, E-14071, Spain
  • 2 Departamento de Química Física y Termodinámica Aplicada, Instituto Universitario de Nanoquímica (IUNAN), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Ed. Marie Curie, Córdoba, E-14071, Spain
  • 3 Facultad de Ingeniería Mochis, Universidad Autónoma de Sinaloa, Fuente de Poseidón y Prol. Angel Flores, S.N., Los Mochis Sin., 81223, Mexico
  • 4 Department of Chemistry and Biochemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, TX 79968, United States
  • 5 Scientific Center for Molecular Design and Synthesis of Innovative Compounds for the Medical Industry, People’s Friendship University of Russia (RUDN University), Moscow, 117198, Russian Federation
Keywords
Carbon N-doped; Co2O3 nanoparticles; Mechanochemical synthesis; OER; PAN
Date of creation
20.04.2021
Date of change
20.04.2021
Short link
https://repository.rudn.ru/en/records/article/record/72169/
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