▎ 摘　　要

An easy novel approach which offers a fast pathway of macroscopic quantity preparation of graphene nanosheets (GS) at room temperature has been firstly proposed via lithium aluminum tetrahydride (LiAlH4) and phosphorus tribromide (PBr3) as the deoxidizer based on graphite oxide (GO). The structure of the graphene was investigated by high-resolution transmission electron microscopy (HR-TEM) indicating the GS with few layers (similar to 3 layers). It is found that the GS as anode material used for lithium ion battery (LIB) has high initial coulombic efficiency (83.1%). The first discharge and charge capacity of the prepared GS were 1029.4 mAh.g(-1) 855.1 mAh.g(-1) at a current density of 100 mA.g(-1), respectively. After 21 cycles, the reversible capacity is still kept at 760.7 mAh.g(-1). The as-prepared GS with few layers and defects could be optimized for excellent electrochemical performance as lithium ion battery anode material. (C) 2012 Elsevier B.V. All rights reserved.