High-performance Bi₂Se₃/MXene/SWCNT heterostructures as binder-free anodes in lithium-ion batteries

Abstract

Bi2Se3, MXenes, and SWCNTs are promising potential alternatives to replace the conventional graphite in the anodes of lithium-ion batteries (LIBs) and enhance their performance. However, all these materials have drawbacks,...

Rapid Growth of Bi2Se3 Nanodots on MXene Nanosheets at Room Temperature for Promoting Sulfur Redox Kinetics

“…The voltage of Bi 2 Se 3 @ MXene/Cu decreased more slowly than that of Cu, which was due to the lithiation process of Bi 2 Se 3 @MXene. 62 The Li nucleation overpotential on Bi 2 Se 3 @MXene/Cu (13.3 mV) was lower than that on Cu (19.5 mV) (Figure 6b). In addition, Bi 2 Se 3 @MXene/Cu (18.9 mV) had a Li deposition overpotential lower than that of Cu (26.6 mV).…”

“…Voltage–capacity curves are presented to investigate the nucleation behaviors of Li on Cu and Bi 2 Se 3 @MXene modified Cu (Bi 2 Se 3 @MXene/Cu) current collectors (Figure a, Figure S25). The voltage of Bi 2 Se 3 @MXene/Cu decreased more slowly than that of Cu, which was due to the lithiation process of Bi 2 Se 3 @MXene . The Li nucleation overpotential on Bi 2 Se 3 @MXene/Cu (13.3 mV) was lower than that on Cu (19.5 mV) (Figure b).…”

Controlled growth of a 2D/2D heterojunction for high-performance sodium ion storage

“…The formation of heterostructures effectively prevents the 2D restacking of Mxene and increases the number of active sites for energy storage. [40][41][42][43][44][45][46] Among them, it can be found that the 2D/2D heterojunctions have been rarely explored for energy storage, particularly using the two emerging 2D materials of Ti 3 C 2 T x and GDY. 47 As reported, the 2D/2D heterojunctions can maximize the enrichment of active sites and have been found to efficiently tune the interfacial electronic properties.…”