Tailoring MoS 2 Ultrathin Sheets Anchored on Graphene Flexible Supports for Superstable Lithium‐Ion Battery Anodes

2D MoS 2 has a significant capacity decay due to the stack of layers during the charge/discharge process, which has seriously restricted its practical application in lithium‐ion batteries. Herein, a simple preform‐in situ process to fabricate vertically grown MoS 2 nanosheets with 8–12 layers anchored on reduced graphene oxide (rGO) flexible supports is presented. As an anode in MoS 2 /rGO//Li half‐cell, the MoS 2 /rGO electrode shows a high initial coulomb efficiency (84.1%) and excellent capacity retention (84.7% after 100 cycles) at a current density of 100 mA g −1 . Moreover, the MoS 2 /rGO electrode keeps capacity as high as 786 mAh g −1 after 1000 cycles with minimum degradation of 54 µAh g −1 cycle −1 after being further tested at a high current density of 1000 mA g −1 . When evaluated in a MoS 2 /rGO//LiCoO 2 full‐cell, it delivers an initial charge capacity of 153 mAh g −1 at a current density of 100 mA g −1 and achieves an energy density of 208 Wh kg −1 under the power density of 220 W kg −1 .