Atomic layer deposition of V2O5 on nitrogen-doped graphene as an anode for lithium-ion batteries

Thin vanadium pentoxide (V2O5) layers were grown on porous nitrogen-doped-graphene (NG) nanosheets via atomic layer deposition (ALD). The fabricated NG-V2O5 (NG-V) composite electrodes exhibited a good electrochemical performance when used as anodes for lithium-ion batteries (LIBs), which can be attributed to strong chemical bonding between V2O5 and NG substrates and the porous structure of NG, which gives the material an excellent electron- and ion-transport ability. In particular, at a current density of 200 and 1000 mAg(-1), the NG-V electrodes showed good capacity retention and high discharge capacities of 608 (after 50 cycles) and 365 mAhg(-1) (after 500 cycles), respectively, based on the total electrode. (C) 2019 Elsevier B.V. All rights reserved.