English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/224730
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Graphitic carbon foams as anodes for sodium-ion batteries in glyme-based electrolytes

AuthorsRodríguez García, Jorge; Cameán Martínez, Ignacio CSIC ORCID ; Ramos Alonso, Alberto CSIC ORCID; Rodríguez Vázquez, Elena CSIC ORCID ; García Suárez, Ana Beatriz CSIC ORCID
KeywordsSodium-ion battery
Graphitic carbon foam anode
Glyme-based electrolyte
Sodium storage mechanism
High-rate capability
Issue Date2018
CitationElectrochimica Acta 270: 236- 244 (2018)
AbstractThe electrochemical performance as potential anodes for sodium-ion batteries of boron-doped and non-doped graphitic carbon foams is investigated by galvanostic cycling versus Na/Na at different electrical current densities, in glyme-based electrolytes which are known to allow the intercalation of the Na ions into graphite. The influence of materials composition and graphitic degree on battery parameters is firstly determined and further discussed by analyzing the mechanism of the electrochemical storage of Na ions into these materials which was found to occur through different combinations of pseudocapacitive intercalation and diffusion-controlled intercalation processes. In summary, the results of this study have demonstrated that graphitic carbon foams match a very acceptable capacity with excellent cycle stability as well as performance at high electrical current densities (up to ∼ 90 mAh g after 300 cycles at 1.9 A g with coulombic efficiency ∼ 100%) which make them suitable for sodium-ion battery applications. Overall, the increase of the interlayer spacing between the graphene layers and the presence of boron promote the pseudocapacitive intercalation which is responsible for the remarkable rate performance of these materials, whereas the improvement of diffusion-controlled intercalation capacity is mainly related to larger boron content.
Publisher version (URL)http://dx.doi.org/10.1016/j.electacta.2018.03.084
Identifiersdoi: 10.1016/j.electacta.2018.03.084
issn: 0013-4686
Appears in Collections:(INCAR) Artículos
Files in This Item:
File Description SizeFormat 
Graphitic_carbon_foams_García.pdf1,47 MBAdobe PDFThumbnail
Graphitic_carbon_foams_García_SI.pdf1,09 MBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.