▎ 摘　　要

Porous graphene has attracted considerable attention for its promising potential application in energy storage devices due to its unique porous structure combined with inherent electronic characteristics of graphene. Herein, a cost effective and environmentally friendly strategy is developed to prepare porous graphene via graphitization coupled with liquid oxidation-rapid thermal reduction using anthracite as a precursor. The prepared porous graphene has microstructure features such as highly continuous corrugated nanosheets with micro-meso-macro hierarchical porous structure, high specific surface area (640 m(2)g(-1)) and large pore volume (3.792 cm(3)g(-1)) with large amount of structural defects and nano-pores, which provides sufficient active sites for lithium ions storage and offers favorable pathways for the fast transportation of lithium ions and electrons. When used as anode materials for lithium-ion batteries, such porous graphene exhibits a high reversible capacity of 770 mAh . g(-1) at current density of 0.1 C, and possesses an outstanding rate capability with desirable capacities of 274 mAh . g(-1) and 224 mAh . g(-1) even at high current densities of 10 C and 20 C. Moreover, such porous graphene also demonstrates superior cycling performance up to 98.0% of the initial reversible capacity retention after 110 cycles. This study paves a promising approach to the large-scale production of porous graphene from coal for high performance anode materials used in lithium-ion batteries. (C) 2018 Elsevier B.V. All rights reserved.