▎ 摘　　要

Constructing a layered transitional metal chalcogenide (TMC) materials with high specific capacity and execellent rate performance for Li-ion batteries (LIBs) remains a touch challenge. Here in, an "Anti -Oriented-Attachment " growth mechanism is proposed to design the graphene-based vertically aligned Co0.85Se nanoarrays (CoSeNAs@G). The CoSeNAs@G owns highly exposed edge sites and shorter lamella size, providing more transport channels for fast Li-ion transfer. At the same time, graphene as a matrix can improve the conductivity and accommodate to the volume expansion during charge and discharge. When used as an anode material for LIBs, CoSeNAs@G composite exhibits a high reversible specific capacity of 675 mAh g(-1) at 100 mA g(-1). When the current density is increased by 20 times (2000 mA g(-1)), the specific capacity keeps at 492 mAh g(-1) with a retention of 73%, demonstrating an excellent rate performance. Even after 300 cycles at 1000 mA g(-1), CoSeNAs@G composite still delivers a specific capacity of 561 mAh g(-1). Additionaly, the CoSeNAs@G composite exhibits a promising potential as anode candidate in the full LIBs. (C) 2022 Published by Elsevier B.V.