English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/11314
Compartir / Impacto:
Add this article to your Mendeley library MendeleyBASE
Citado 24 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL

Tin–carbon composites as anodic material in Li-ion batteries obtained by copyrolysis of petroleum vacuum residue and SnO2

AutorTirado, J. L.; Santamaría Ramírez, Ricardo ; Ortiz, G. F.; Menéndez López, Rosa María ; Lavela, P.; Jiménez-Mateos, J. M.; Gómez García, F. J.; Concheso Álvarez, Alejandro ; Alcántara, R.
Palabras claveGraphite anodes
Lithium storage
Oxide glasses
Fecha de publicación2-abr-2007
CitaciónCarbon 45(7): 1396-1409 (2007)
ResumenComposite materials with tin nanoparticles surrounded by a “muffling” carbon matrix are formed simultaneously by adding 20% SnO2 to a vacuum residue and following carbonisation between 700°C and 1000°C. The primary purpose of the carbonaceous material is the reduction of SnO2, giving rise to SnS and Sn as nanoparticles. The homogenous distribution of both components induces therefore a synergetic effect on the properties of the electrode material, not only from the electrochemical point of view but also from that mechanical. Thus, the carbon matrix hinders the agglomeration of Li–Sn alloys during long term cycling and, simultaneously, tin particles improve the conductivity of the material and increase the overall capacity as compared with the reference carbon. In addition, a CVD treatment increases the performance of the material. Sn-119 Mössbauer and Li-7 MAS NMR spectroscopies allow a detailed study of partially charged/discharged samples and, therefore, the phases, steps and mechanisms occurring during the electrochemical process.
Descripción14 pages, 16 figures, 3 tables.-- Printed version published Jun 2007.
Versión del editorhttp://dx.doi.org/10.1016/j.carbon.2007.03.041
Aparece en las colecciones: (INCAR) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.