Amorphous vanadium oxide coating on graphene by atomic layer deposition for stable high energy lithium ion anodes

Abstract

Uniform amorphous vanadium oxide films were coated on graphene via atomic layer deposition and the nano-composite displays an exceptional capacity of ∼900 mA h g⁻¹ at 200 mAg⁻¹ with an excellent capacity retention at 1 A g⁻¹ after 200 cycles. The capacity contribution (1161 mA h g⁻¹) from vanadium oxide only almost reaches its theoretical value.