Cu₂MoS₄ Nanotubes as a Cathode Material for Rechargeable Magnesium‐ion Battery

Abstract

Identification of efficient cathode materials represents a huge challenge for development of reversible Mg‐ion batteries (MIBs). Herein, we report on the preparation of copper molybdenum sulfide (Cu2MoS4) in a novel microstructure, namely nanotube with the square‐cross‐section, and its use as a cathode material for Mg‐ion battery. The Cu2MoS4 nanotube was prepared via a one‐pot hydrothermal method using Cu2O nanocubes as a sacrificial template. The Cu2MoS4 nanotube belongs to the top‐tier MIBs cathode materials that shows a remarkable specific capacity of 390.5 mAh g−1.

Investigation on the Growth Mechanism of Cu2MoS4 Nanotube, Nanoplate and its use as a Catalyst for Hydrogen Evolution in Water

“…The TEM imaging illustrates the lattice fringe having the d ‐spacing of 0.49 and 0.46 nm (Figure b, inset) that agree with the lattice spacing of (002) and (011) facets of the Cu 2 MoS 4 . Consistent with these results, XPS analysis showed identical signatures of Cu + , Mo 6+ and S 2− core levels to those previously reported for the Cu 2 MoS 4 nanopowder and nanotubes (Figure S3).…”

“…The graphene sheet was proposed to have a crucial role, namely acting as a platform for the growth of Cu 2 MoS 4 nanotube. However, in our previous work we showed that Cu 2 MoS 4 nanotube was grown even without graphene sheet added . It raises a question on potential growth mechanism(s) of Cu 2 MoS 4 nanotube.…”

“…However, in our previous work we showed that Cu 2 MoS nanotube was grown even without graphene sheet added. [23] It raises a question on potential growth mechanism(s) of Cu 2 MoS 4 nanotube. Herein, we investigate the progress of the reaction between (NH 4 ) 2 MoS 4 and Cu 2 O by characterizing products generated at different reaction stages, e. g. prior to the hydrothermal treatment and at different hydrothermal treatment times.…”

“…This material, in form of spherical nanoparticles, had been demonstrated to be an attractive HER catalyst in water for the first time by our group . Its use as electrode material for Li‐, Na‐ and Mg‐ion battery has been also investigated. Regarding the HER, we demonstrated that the H 2 evolution occurs either on the Mo VI center or sulfide ligand rather than the Cu I Lewis acid center .…”

Designing Nanostructured Metal Chalcogenides as Cathode Materials for Rechargeable Magnesium Batteries

“…The minimum reversible capacity corresponds to the maximum current density in aqua, and vice versa in red. Data was extracted from ref [ 12,27,29,31,36,39,42,43,45–48,50,68,70,86–88,90,92–98 ] .…”