Nanocomposite Si/(NiTi) anode materials synthesized by high-energy mechanical milling for lithium-ion rechargeable batteries

Top‐Down Synthesis of Silicon/Carbon Composite Anode Materials for Lithium‐Ion Batteries: Mechanical Milling and Etching

“…Recently, the HEMM process has been demonstrated in powder metallurgy technology as an efficient technique that can be used for large‐scale production of a variety of nanostructured materials and has been widely used to synthesize nano‐Si based anode materials to relieve the huge volume changes of Si anodes for LIBs. For example, nanosized Si with a particle size around 150 nm can be prepared at a large scale through HEMM from cheap and abundant microsized low‐grade Si sources (metallurgical Si: ∼99 wt % Si at a cost of ∼$1 kg −1 and ferrosilicon: ∼83 wt % Si and ∼13 wt % Fe, costing ∼$0.6 kg −1 ) .…”

A novel Si/Sn composite with entangled ribbon structure as anode materials for lithium ion battery

“…In the present work, we focus on the mechanical characteristics of the anode composite and propose to consider the extrinsic toughening and use the lithium active material Sn (992 mA h g −1 for Li 22 Sn 5 ), which is rather ductile hence able to withstand high deformation. A novel Si/Sn composite with entangled ribbon structure was synthesized by low-cost mechanical milling (MM) 31 32 33 .The detailed observation of the microstructure of the as-prepared composite was carried out. It can be seen Si particles were entangled within the Sn micro-ribbons.…”

The role of thermal annealing on the microstructures of (Ti, Fe)-alloyed Si thin-film anodes for high-performance Li-ion batteries

“…Although several studies based on such alloyed Si anodes have been reported, processing methods used to grow the nanostructured Si usually require complicated thermo chemical processing steps at high temperatures 5,6 and the fabrication processings need safe handling of metal powders. 8,10,19 Nevertheless, few study has been done into a simple fabrication method of Si-silicide nanocomposite anodes for advanced Li-ion battery. Sputtering deposition method could be one of viable approaches to fabricate (Ti, Fe)-alloyed Si thin-lm anodes with high-efficiency and nearly accurate stoichiometric composition of the anode structure.…”