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In situ 119Sn Mössbauer spectroscopy study of Sn-based electrode materials |
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| Authors: | Abdelmaula Aboulaich Florent Robert Pierre Emmanuel Lippens Laurent Aldon Josette Olivier-Fourcade Patrick Willmann Jean-Claude Jumas |
| Institution: | (1) Laboratoire des Agrégats Moléculaires et Matériaux Inorganiques (UMR 5072-CNRS), Université Montpellier II, CC015, Place Eugène Bataillon, 34095 Montpellier cedex 5, France;(2) Centre National d’études Spatiales, 18 avenue Edouard Bellin, 31401 Toulouse cedex 9, France |
| Abstract: | Sn-based composite materials were synthetized by a conventional melt-quenching method, and studied by X-ray diffraction, electrochemistry and in situ 119Sn Mösssbauer spectroscopy. Tin was dispersed ex situ into a matrix formed from B2O3:P2O5. XRD and 119Sn Mössbauer spectroscopy show the formation of an interface between the active species (Sn0) and the matrix. This amorphous interface acts as a “buffer-zone” which compensates volume changes during the tin–lithium alloy formation and avoids aggregation of tin particles. |
| Keywords: | Li-ion batteries tin-based composite materials in situ M?ssbauer spectroscopy |
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