Pair distribution function analysis and Moessbauer study of defects in microwave-hydrothermal LiFePO4 (Articolo in rivista)

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  • Pair distribution function analysis and Moessbauer study of defects in microwave-hydrothermal LiFePO4 (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1039/c1ra00525a (literal)
Alternative label
  • Marcella Bini (a); Stefania Ferrari (a); Doretta Capsoni (a); Piercarlo Mustarelli (a); Gabriele Spina (b); Franco Del Giallo (c); Marco Lantieri (c); Cristina Leonelli (d); Antonino Rizzuti (e); Vincenzo Massarotti (a) (2012)
    Pair distribution function analysis and Moessbauer study of defects in microwave-hydrothermal LiFePO4
    in RSC advances
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Marcella Bini (a); Stefania Ferrari (a); Doretta Capsoni (a); Piercarlo Mustarelli (a); Gabriele Spina (b); Franco Del Giallo (c); Marco Lantieri (c); Cristina Leonelli (d); Antonino Rizzuti (e); Vincenzo Massarotti (a) (literal)
Pagina inizio
  • 250 (literal)
Pagina fine
  • 258 (literal)
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  • 2 (literal)
Rivista
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  • Royal Society of Chemistry (RSC). (literal)
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  • 9 (literal)
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  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a) Dip. Chimica, Pavia b) Dip. Fisica e Astronomia, Firenze c) CNR-ISC, Sesto fiorentino, Firenze d) Dip. Ingegneria dei Materiali e dell'Ambiente, Modena, Reggio Emilia e) Dip. di Ingegneria delle Acque e Chimica, Bari (literal)
Titolo
  • Pair distribution function analysis and Moessbauer study of defects in microwave-hydrothermal LiFePO4 (literal)
Abstract
  • Olivine-type LiFePO4 is nowadays one of the most important cathode materials of choice for highenergy lithium ion batteries. Its intrinsic defectivity, and chiefly the so-called lithium iron anti-site, is one of the most critical issues when envisaging electrochemical applications. This paper reports a combined diffractometric (Synchrotron Radiation XRD with Rietveld and PDF analyses) and spectroscopic (Moessbauer) approach able to give a thorough characterization of the material defectivity. Such analytical procedure has been applied to a sample prepared following an innovative microwave-assisted hydrothermal synthesis route that, in a few minutes, allowed us to obtain a well crystallized material. PDF analysis, which is applied for the first time to this type of battery material, reveals the presence of disorder possibly due to Li/Fe exchange or to a local symmetry lowering. A 5% amount of iron on the lithium site has been detected both by PDF as well as by Moessbauer spectroscopy, which revealed a small percentage of Fe3+ on the regular sites. (literal)
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