The lamella SnSbCux/MCMB/carbon composite as high stability and durable anodes for lithium ion battery

Lamella SnSbCu x /MCMB/carbon composite were prepared by a multi-step synthesis method for high stability and long life lithium ion battery electrodes. The lamella composite were synthesized via co-precipitation method combining with high-speed ball milling and subsequent pyrolysis . The resultant composite are consisted of nano SnSbCu x particles, lamella mesophase carbon microbeads (MCMB, after ball milling) and amorphous carbon coating pyrolyzed from phenolic resin . The lamella MCMB was treated as the inner terrace, which offered efficient electron conducting pathway for connection of nano SnSbCu x particle and pyrolysis carbon. With the increasing of the content of inactive element Cu, the SnSbCu x /MCMB/carbon composite are propitious to improve the cycling performance. When cycled at a constant current of 100   mA   g −1 between 0.01 and 2.0   V, the coulombic efficiency of first cycle exceeds 88.45% and the reversible capacity of 100th cycle attains to 485   mAh   g −1 (91.4% capacity retention) in SnSbCu 0.5 /MCMB/carbon alloy anodes.