Electrospinning synthesis of few‐layer hexagonal antimonene nanosheets as anode for lithium‐ion batteries

Abstract

Two-dimensional (2D) antimonene (Sb) is regarded as a promising anode candidate for lithium-ion batteries owing to its theoretical capacity (660 mAh g À1 ).Preparing hexagonal Sb nanosheets (H-SbNs) has been addressed an effective strategy to resolve the drastic volume expansion and the pulverization issues.Here, we present a facile method to prepare the few-layer H-SbNs on the surface of carbon fibers via the electrospinning with a thermal annealing process. When evaluated as an anode for lithium storage, the H-SbN electrode delivers a high rate performance and excellent cycling stability. Electrochemical analysis reveals that the H-SbN electrode displays the mainly diffusion-controlled capacitive contributions and excellent lithium-ion and electron transport. Our findings demonstrate that 2D materials are superior to use as the Sb-based anodes for electrochemical lithium storage.

Dimensional-transformation of hexagonal antimonene nanosheets through the manipulation of reduction kinetics

“…Graphene can be used as a typical 2D material not only in electrodes or additives in other electrode materials, but also as a coating to improve battery power characteristics [10][11][12][13][14][15]. In recent years, novel 2D materials analogous to graphene, such as phosphorene [16,17], silicene [18,19], antimonene [20][21][22][23], and germanene [24], have been discovered and are emerging as viable alternatives to existing 2D materials.…”