Artículo
Comparative Study of Different Alkali (Na, Li) Titanate Substrates as Active Materials for Anodes of Lithium - Ion Batteries
Chauque, Susana
; Robledo, Carla Belén
; Leiva, Ezequiel Pedro M.
; Oliva, Fabiana Yolanda
; Camara, Osvaldo Raul
Fecha de publicación:
08/2014
Editorial:
Electrochemical Society
Revista:
ECS Transactions
ISSN:
1938-6737
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The relationship between structure and lithium storage capacity of different titanate samples as anode materials for lithium-ion batteries is discussed. Li4Ti5O12, Na2Ti3O7 and Na2Ti6O13 were synthesized by solid-state reaction. The structure, surface and morphology of the samples were characterized by SEM, XRD and RAMAN spectroscopy. The electrochemical performance was studied by galvanostatic charge-discharge cycling, cyclic voltammetry, electrochemical impedance spectroscopy and rate capability. The lithium titanate presented the highest capacity of the three electrodes, together with the most reversible potential plateau at 1.6 V vs. Li+/Li and the best response in rate capability. Apparent diffusion coefficients of Li+ ions into the titanate matrices were obtained, showing the highest value for the lithium titanate compound. Between both sodium titanates, Na2Ti6O13 presented the highest specific capacity and the best discharge retention.
Palabras clave:
Lithium Ion Battery
,
Cathode
,
Titanate
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Articulos(INFIQC)
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Citación
Oliva, Fabiana Yolanda; Leiva, Ezequiel Pedro M.; Robledo, Carla Belén; Chauque, Susana; Camara, Osvaldo Raul; Comparative Study of Different Alkali (Na, Li) Titanate Substrates as Active Materials for Anodes of Lithium - Ion Batteries; Electrochemical Society; ECS Transactions; 63; 1; 8-2014; 113-128
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