Facile preparation of glycine-based mesoporous graphitic carbons with embedded cobalt nanoparticles
Wang, Wenhai (Institut de Ciència de Materials de Barcelona)
Tesio, Alvaro Y. (Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy)
Olivares-Marín, Mara (Universidad de Extremadura. Departamento de Ingeniería Mecánica, Energética y de los Materiales)
Gómez-Romero, Pedro 1959- (Institut Català de Nanociència i Nanotecnologia)
Tonti, Dino (Institut de Ciència de Materials de Barcelona)

Date:	2022
Abstract:	A simple route has been developed for the preparation of mesoporous graphitic carbons with embedded cobalt nanoparticles just using glycine as a nitrogen source, cobalt nitrate and distilled water. After heating the mixture to 300 °C under magnetic stirring, a dry solid product was obtained, which was then carbonized at 900 ºC under argon atmosphere. Changing the glycine/Co molar ratio allowed controlling the size of the cobalt particles and their dispersion in the carbon matrix, the porosity of the carbon and its graphitic character. The carbon-metal composites obtained were tested as oxygen cathodes in Li-O batteries. Cells assembled exhibited a full discharge capacity up to 2. 19 mAh cm at a current of 0. 05 mA cm and over 39 cycles at a cutoff capacity of 0. 5 mAh cm. This work provides a green, feasible and simple way to prepare mesoporous graphitic carbons with embedded cobalt nanoparticles without involving templates.
Grants:	Agencia Estatal de Investigación CEX2019-000917-S Agencia Estatal de Investigación RTI2018-096273-B-I00 Agencia Estatal de Investigación RTI2018-3097753-B-I00 Ministerio de Economía y Competitividad MAT2017-91404-EXP Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1687
Note:	This research was supported by the Spanish Ministry of Science and Innovation, through the "Severo Ochoa" Programme for Centers of Excellence in R&D (CEX2019-000917-S), the projects MAT2017-91404-EXP, RTI2018-096273-B-I00, RTI2018-3097753-B-I00, with FEDER co-funding, the CSIC program for the Spanish Recovery, Transformation and Resilience Plan "Plataforma Temática Interdisciplinar Transición Energética Sostenible+ (PTI-TRANSENER +)" funded by the Recovery and Resilience Facility of the European Union, established by the Regulation (EU) 2020/2094. The authors also acknowledge the Generalitat de Catalunya (2017SGR1687). W.W. gratefully acknowledges the support from the China Scholarship Council (CSC No.:201808340076). This work has been performed within the framework of the doctoral program in materials science of UAB (W. W.).
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Cobalt nanoparticles ; Distilled water ; Dry solids ; Facile preparation ; Graphitic carbons ; Magnetic stirring ; Mesoporous ; Nitrogen sources ; Simple++ ; Solid products
Published in:	Journal of Materials Science, Vol. 57, issue 28 (July 2022) , p. 13403-13413, ISSN 1573-4803

DOI: 10.1007/s10853-022-07421-3

11 p, 1.6 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
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Articles > Published articles