|
|||||
|
|
Mechanosynthesis and characterisation of the Li–Sn system |
|
| Authors: | Florent Robert Pierre Emmanuel Lippens Robert Fourcade Jean-Claude Jumas Frederic Gillot Mathieu Morcrette Jean-Marie Tarascon |
| Affiliation: | (1) Laboratoire des Agrégats Moléculaires et Matériaux Inorganiques (CNRS UMR 5072), Université Montpellier II, CC 015, Place E. Bataillon, 34095 Montpellier Cedex 5, France;(2) Laboratoire de Réactivité et de Chimie des Solides (CNRS UMR 6007), Université d’Amiens, 33 rue Saint Leu, 80039 Amiens, France |
| Abstract: | Intermetallic phases Li–Sn were synthesized by ball-milling and characterized for their structures and electrochemical performances. All phases in Li–Sn binary phase diagram were identified by 119Sn Mössbauer spectroscopy, used as reference materials for the study of lithium insertion into tin-based electrode materials. The observed spectra show two distinct environments of tin; the Sn-rich phases and the Li-rich phases. An example of electrochemical properties of these phases is proposed for Li22Sn5. Irreversibility of the first cycle is related to the structural change (3D→2D) of this phase. |
| Keywords: | 119Sn M?ssbauer spectrometry ball milling Li– Sn alloys electrochemical performance |
| 本文献已被 SpringerLink 等数据库收录！ | |