Catalogo dei prodotti della ricerca
IRIS è la soluzione IT che facilita la raccolta e la gestione dei dati relativi alle attività e ai prodotti della ricerca. Fornisce a ricercatori, amministratori e valutatori gli strumenti per monitorare i risultati della ricerca, aumentarne la visibilità e allocare in modo efficace le risorse disponibili.
EnglishThe spinel compound Li 4/3+xTi 5/3O 4 is known to undergo reversible lithium intercalation up to x=1 with almost no change in lattice parameters, hence its designation as a "zero strain" intercalation compound. Structural changes that accompany electrochemical Li intercalation into this compound were studied by both 7Li nuclear magnetic resonance (NMR) and Ti K-edge X-ray absorption fine structure (XAFS). The NMR results demonstrate that Li occupancies do not follow a simple distribution between two possible sites, one tetrahedral and one octahedral. The presence of at least one additional octahedral site is suggested. Line width measurements show that the Li + ions do not return to their original distribution after cycling. XAFS results indicate the presence of modest static disorder in Ti-O and Ti-Ti distances above x = 0.5. Both methods thus reveal subtle structural details previously unobserved by X-ray diffraction (XRD).
Lithium-7 nuclear magnetic resonance and Ti K-edge X-ray absorption spectroscopic investigation of electrochemical lithium insertion in Li4/3+xTi5/3O4 / F., Ronci; P. E., Stallworth; F., Alamgir; T., Schiros; J., VAN SLUYTMAN; X., Guo; Reale, Priscilla; S., Greenbaum; M., DEN BOER; Scrosati, Bruno. - In: JOURNAL OF POWER SOURCES. - ISSN 0378-7753. - STAMPA. - 119-121(2003), pp. 631-636. [10.1016/S0378-7753(03)00191-5]
Scheda prodotto non validato
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo
| Titolo: | Lithium-7 nuclear magnetic resonance and Ti K-edge X-ray absorption spectroscopic investigation of electrochemical lithium insertion in Li4/3+xTi5/3O4 | |
| Autori: | ||
| Data di pubblicazione: | 2003 | |
| Rivista: | ||
| Citazione: | Lithium-7 nuclear magnetic resonance and Ti K-edge X-ray absorption spectroscopic investigation of electrochemical lithium insertion in Li4/3+xTi5/3O4 / F., Ronci; P. E., Stallworth; F., Alamgir; T., Schiros; J., VAN SLUYTMAN; X., Guo; Reale, Priscilla; S., Greenbaum; M., DEN BOER; Scrosati, Bruno. - In: JOURNAL OF POWER SOURCES. - ISSN 0378-7753. - STAMPA. - 119-121(2003), pp. 631-636. [10.1016/S0378-7753(03)00191-5] | |
| Handle: | http://hdl.handle.net/11573/341970 | |
| Appartiene alla tipologia: | 01a Articolo in rivista |
File allegati a questo prodotto
http://hdl.handle.net/11573/341970
Copyright © 2022