Low-potential sodium insertion in a NASICON-type structure through the Ti(III)/Ti(II) redox couple.
J Am Chem Soc
; 135(10): 3897-903, 2013 Mar 13.
Article
en En
| MEDLINE
| ID: mdl-23421416
ABSTRACT
We report the direct synthesis of powder Na3Ti2(PO4)3 together with its low-potential electrochemical performance and crystal structure elucidation for the reduced and oxidized phases. First-principles calculations at the density functional theory level have been performed to gain further insight into the electrochemistry of Ti(IV)/Ti(III) and Ti(III)/Ti(II) redox couples in these sodium superionic conductor (NASICON) compounds. Finally, we have validated the concept of full-titanium-based sodium ion cells through the assembly of symmetric cells involving Na3Ti2(PO4)3 as both positive and negative electrode materials operating at an average potential of 1.7 V.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Fosfatos
/
Sodio
/
Titanio
Idioma:
En
Revista:
J Am Chem Soc
Año:
2013
Tipo del documento:
Article
País de afiliación:
España