An amorphous Si film anode for all-solid-state lithium batteries

•Pure a-Si film anode exhibits excellent anode properties in all-solid-state batteries.•The a-Si anode shows quite high rate capability and very low interfacial resistance.•Charge/discharge cycles are stable with high coulombic efficiency over 99%.•The high performance is achieved in a-Si films without any additives.

This study reports an amorphous Si (a-Si) film as an anode material for all-solid-state lithium batteries. The film exhibits stable charge/discharge over 100 cycles and rapid charge transfer at the interface with a solid electrolyte. The potential performance of the a-Si film anode will become apparent in the present work.