Ultra-fast dry microwave preparation of SnSb used as negative electrode material for Li-ion batteries

• Published in: Journal of power sources 2016-09, Vol.325, p.346-350
• Main Authors: Antitomaso, P., Fraisse, B., Sougrati, M.T., Morato-Lallemand, F., Biscaglia, S., Aymé-Perrot, D., Girard, P., Monconduit, L.
• Format: Article
• Language: English
• Subjects: Batteries; Composite electrode; Micro waves synthesis; Tin antimonide
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/j.jpowsour.2016.06.010

Tin antimonide alloy was obtained for the first time using a very simple dry microwave route. Up to 1 g of well crystallized SnSb can be easily prepared in 90 s under air in an open crucible. A full characterization by X-ray diffraction and 119Sn Mössbauer spectroscopy demonstrated the benefit of carbon as susceptor, which avoid any oxide contamination. The microwave-prepared SnSb was tested as negative electrode material in Li batteries. Interesting results in terms of capacity and rate capability were obtained with up to 700 mAh/g sustained after 50 cycles at variable current. These results pave the way for the introduction of microwave synthesis as realistic route for a rapid, low cost and up-scalable production of electrode material for Li batteries or other large scale application types. •Microwaves synthesis.•1 g of well crystallized SnSb in 90 s.•Rapid, low cost and up-scalable production of intermetallic phases.•Applicable for Li batteries or other industry application types.•Good capacity and rate capability in Li battery.