▎ 摘　　要

Metal telluride is a highly promising anode for alkali-metal ion batteries on account of its high theoretical capacity, distinctive layered structure, and good conductivity. Nonetheless, its application in potassium-ion batteries (PIBs) is restricted by serious structure damage of electrode and sluggish faradic reaction in kinetics stemmed from the intrinsic large ion radius. Herein, a lamellar nanostructure of multilayer graphene sheets embedded with SnTe nanoparticles (SnTe/MGS) is engineered. During the synthesis process, fine monodisperse SnTe nanoparticles and multilayer graphene sheets form a porous network framework together, which effectively buffers the electrode against the pulverization caused by the repeated insertion/extraction of large-sized K+ and provides a wealth of pseudocapacitance storage sites and electronic transmission channels at the meantime. Particularly, both SnTe and MGS possess a layered structure, thus affording more reaction sites for the diffusion behavior. When employed as an anode for PIBs, SnTe/MGS also delivers a high initial reversible capacity of 345.7 mA h g(-1) at 0.1 A g(-1), prominent long-term stability of 279.4 mA h g(-1) at 0.5 A g(-1) after 1000 cycles, and desired rate performance of 180.1 mA h g(-1) at 2.0 A g(-1).