Moessbauer spectra as a 'fingerprint' in tin-lithium compounds: Applications to Li-ion batteries

Journal Article · Mon Jan 15 00:00:00 EST 2007 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2006.10.026· OSTI ID:21015656

Lippens, P E ^[1]; Olivier-Fourcade, J ^[1]; Jumas, J -C ^[1]; Gillot, F ^[2]; Morcrette, M ^[2]; Tarascon, J -M ^[2]

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1. Laboratoire des Agregats Moleculaires et Materiaux Inorganiques (UMR 5072 CNRS), CC15, Universite Montpellier II, Place Eugene Bataillon, 34095 Montpellier Cedex 5 (France)
2. Laboratoire de Reactivite et Chimie des Solides (UMR 6007 CNRS), Universite de Picardie Jules Verne, 33 rue Saint Leu, 80039 Amiens (France)

Several Li-Sn crystalline phases, i.e. Li{sub 2}Sn{sub 5}, LiSn, Li{sub 7}Sn{sub 3}, Li{sub 5}Sn{sub 2}, Li{sub 13}Sn{sub 5}, Li{sub 7}Sn{sub 2} and Li{sub 22}Sn{sub 5} were prepared by ball-milling and characterized by X-ray powder diffraction and {sup 119}Sn Moessbauer spectroscopy. The analysis of the Moessbauer hyperfine parameters, i.e. isomer shift ({delta}) and quadrupole splitting ({delta}), made it possible to define two types of Li-Sn compounds: the Sn-richest compounds (Li{sub 2}Sn{sub 5}, LiSn) and the Li-richest compounds (Li{sub 7}Sn{sub 3}, Li{sub 5}Sn{sub 2}, Li{sub 13}Sn{sub 5}, Li{sub 7}Sn{sub 2}, Li{sub 22}Sn{sub 5}). The isomer shift values ranged from 2.56 to 2.38 mm s{sup -1} for Li{sub 2}Sn{sub 5}, LiSn and from 2.07 to 1.83 mm s{sup -1} for Li{sub 7}Sn{sub 3}, Li{sub 5}Sn{sub 2}, Li{sub 13}Sn{sub 5}, Li{sub 7}Sn{sub 2} and Li{sub 22}Sn{sub 5}, respectively. A {delta}-{delta} correlation diagram is introduced in order to identify the different phases observed during the electrochemical process of new Sn-based materials. This approach is illustrated by the identification of the phases obtained at the end of the first discharge of {eta}-Cu{sub 6}Sn{sub 5} and SnB{sub 0.6}P{sub 0.4}O{sub 2.9}. - Graphical abstract: {delta}-{delta} correlation diagram for the different tin sites of the Li-Sn compounds. The symbols denote the different Li-Sn phases and the products obtained at the end of the discharge of {eta}-Cu{sub 6}Sn{sub 5} and SnB{sub 0.6}P{sub 0.4}O{sub 2.9}. The grey and the light-grey areas show Sn-centred polyhedra without and with one Sn first-nearest neighbours, respectively.

• OSTI ID: 21015656
• Journal Information: Journal of Solid State Chemistry, Vol. 180, Issue 1; Other Information: DOI: 10.1016/j.jssc.2006.10.026; PII: S0022-4596(06)00566-4; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DIAGRAMS
ELECTROCHEMISTRY
ISOMER SHIFT
LITHIUM ALLOYS
LITHIUM COMPOUNDS
LITHIUM IONS
MOESSBAUER EFFECT
TIN ALLOYS
TIN COMPOUNDS
X-RAY DIFFRACTION