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Highly graphitized carbon nanosheets with embedded Ni nanocrystals as anode for Li-ion batteries
dc.contributor.author | Soler-Piña, Francisco Javier | |
dc.contributor.author | Hernández-Rentero, C. | |
dc.contributor.author | Caballero Amores, Álvaro | |
dc.contributor.author | Morales Palomino, Julián | |
dc.contributor.author | Rodríguez-Castellón, Enrique | |
dc.contributor.author | Canales-Vázquez, Jesús | |
dc.date.accessioned | 2020-01-28T12:04:18Z | |
dc.date.available | 2020-01-28T12:04:18Z | |
dc.date.issued | 2020 | |
dc.identifier.uri | http://hdl.handle.net/10396/19400 | |
dc.description.abstract | A C/Ni composite was prepared via thermal decomposition of a nickel oleate complex at 700 °C, yielding disperse Ni nanocrystals with an average size of 20 nm, encapsulated by carbon nanosheets as deduced from transmission electron microscopy (TEM) images and confirmed from X-ray photoelectron spectroscopy (XPS). Furthermore, the X-ray diffraction pattern revealed a good ordering of the carbon layers, forced by the Ni encapsulation to adopt a bending structure. Considering the close interaction between the graphitized framework and the metallic nanoparticles we have studied the properties of the composite as an anode for Li-ion batteries. Compared with other nanostructured synthetic carbons, this carbon composite has a low voltage hysteresis and a modest irreversible capacity value, properties that play a significant role in its behaviour as electrodes in full cell configuration. At moderate rate values, 0.25 C, the electrode delivers an average capacity value around 723 mAh·g−1 on cycling, among the highest values so far reported for this carbon type. At higher rate values, 1 C, the average capacity values delivered by the cell on cycling decrease, around 205 mAh·g−1, but it maintains good capacity retention, a coulombic efficiency close to 100% after the first cycles and recovery of the capacity values when the rate is restored from 3 to 0.1 C. | es_ES |
dc.format.mimetype | application/pdf | es_ES |
dc.language.iso | eng | es_ES |
dc.rights | https://creativecommons.org/licenses/by-nc-nd/4.0/ | es_ES |
dc.source | Nano Research 13, 86-94 (2020) | es_ES |
dc.subject | Carbon nanosheets | es_ES |
dc.subject | Nickel nanoparticles | es_ES |
dc.subject | Anode | es_ES |
dc.subject | Lithium batteries | es_ES |
dc.title | Highly graphitized carbon nanosheets with embedded Ni nanocrystals as anode for Li-ion batteries | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1007/s12274-019-2576-4 | es_ES |
dc.relation.projectID | Gobierno de España. MAT2017-87541-R | es_ES |
dc.relation.projectID | Junta de Andalucía. FQM-175 | es_ES |
dc.relation.projectID | Gobierno de España. RTI2018-099668-BC22 | es_ES |
dc.relation.projectID | Junta de Andalucía. UMA18-FEDERJA-126 | es_ES |
dc.relation.projectID | 2019-GRIN-27165 | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |