Inventors:
Dinh Ba Le - Saint Paul MN, US
Assignee:
3M Innovative Properties Company - St. Paul MN
International Classification:
H01M 4/1395
H01B 1/04
US Classification:
4292181, 4292315, 4292318, 429232, 252516, 2525213
Abstract:
An electrode composition for a lithium ion battery having the formula SiSnMCwhere q, x, y, and z represent atomic percent values and (a) (q+x)>2y+z; (b) q≧0, (c) z≧0; and (d) M is one or more metals selected from manganese, molybdenum, niobium, tungsten, tantalum, iron, copper, titanium, vanadium, chromium, nickel, cobalt, zirconium, yttrium, or a combination thereof. The Si, Sn, M, and C elements are arranged in the form of a multi-phase microstructure comprising: (a) an amorphous phase comprising silicon; (b) a nanocrystalline phase comprising a metal silicide; and (c) a phase comprising silicon carbide phase when z>0; and (d) an amorphous phase comprising Sn when q>0.