Temperature dependent Co K-edge extended X-ray absorption fine structure is used to investigate local disorder in LiCoO2 nanoparticles. We find that the nanostructuring has direct influence on the bondlength characteristics. The results reveal a substantial decrease in the force constant of Co-O bonds (the Co-O bonds becoming more flexible), while that for the Co-Co bonds showing hardly any change (or increases slightly) in LiCoO2 nanoparticles with respect to the bulk. Therefore, both random disorder and Co-O bondlength flexibility should be the factors to limit the battery characteristics of the LiCoO2 nanoparticles.

Temperature dependent local structure of LiCoO2 nanoparticles determined by Co K-edge X-ray absorption fine structure / Maugeri, Laura; L., Simonelli; Iadecola, Antonella; B., Joseph; M., Okubo; I., Honma; H., Wadati; T., Mizokawa; Saini, Naurang Lal. - In: JOURNAL OF POWER SOURCES. - ISSN 0378-7753. - 229:(2013), pp. 272-276. [10.1016/j.jpowsour.2012.11.127]

Temperature dependent local structure of LiCoO2 nanoparticles determined by Co K-edge X-ray absorption fine structure

MAUGERI, LAURA;IADECOLA, ANTONELLA;SAINI, Naurang Lal
2013

Abstract

Temperature dependent Co K-edge extended X-ray absorption fine structure is used to investigate local disorder in LiCoO2 nanoparticles. We find that the nanostructuring has direct influence on the bondlength characteristics. The results reveal a substantial decrease in the force constant of Co-O bonds (the Co-O bonds becoming more flexible), while that for the Co-Co bonds showing hardly any change (or increases slightly) in LiCoO2 nanoparticles with respect to the bulk. Therefore, both random disorder and Co-O bondlength flexibility should be the factors to limit the battery characteristics of the LiCoO2 nanoparticles.
x-ray absorption spectroscopy; local disorder; licoo2 nanoparticles
01 Pubblicazione su rivista::01a Articolo in rivista
Temperature dependent local structure of LiCoO2 nanoparticles determined by Co K-edge X-ray absorption fine structure / Maugeri, Laura; L., Simonelli; Iadecola, Antonella; B., Joseph; M., Okubo; I., Honma; H., Wadati; T., Mizokawa; Saini, Naurang Lal. - In: JOURNAL OF POWER SOURCES. - ISSN 0378-7753. - 229:(2013), pp. 272-276. [10.1016/j.jpowsour.2012.11.127]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/515824
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 24
  • ???jsp.display-item.citation.isi??? 26
social impact