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In the past decades, remarkable progress has been achieved in the exploration of electrocatalysts with high activity, long durability, and low cost. Among these, defective graphene (DG)-based catalysts are considered as one of the most potential substitutes for precious metal-based electrocatalysts. DG-based catalysts contain abundant active centers with different configurations resulting from their extraordinary high-structural tunability. Herein, an overview on recent advancements in developing four kinds of DG-based catalysts is presented: 1) heteroatoms-doped graphene; 2) intrinsic DG (vacancy and topological defect); 3) nonmetal atoms or/and metal species-modified intrinsic DG (heterogeneous species and intrinsic defects co-tuned DG); and 4) DG-based van der Waals-type multilayered heterostructures. In particular, the synergistic effects between various defects are discussed, and the origin of catalytic activity is reviewed. Meanwhile, the established defect-derived catalytic mech

Defect-density
Defective-graphene
Electrocatalysis
Lectronic-structures
Interface-engineering